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Make subquery Materialization, as well as semi-join Materialization be shown 

in EXPLAIN as select_type==MATERIALIZED. 

Before, we had select_type==SUBQUERY and it was difficult to tell materialized
subqueries from uncorrelated scalar-context subqueries.
pull/843/head
Sergey Petrunya 14 years ago
parent
b5a05df61e
commit
255fd6c929
29 changed files with 447 additions and 409 deletions
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  1. 12
      mysql-test/r/func_group.result
  2. 2
      mysql-test/r/group_by.result
  3. 2
      mysql-test/r/group_min_max.result
  4. 4
      mysql-test/r/myisam_icp.result
  5. 16
      mysql-test/r/subselect.result
  6. 4
      mysql-test/r/subselect3.result
  7. 4
      mysql-test/r/subselect3_jcl6.result
  8. 116
      mysql-test/r/subselect4.result
  9. 2
      mysql-test/r/subselect_cache.result
  10. 2
      mysql-test/r/subselect_extra.result
  11. 8
      mysql-test/r/subselect_extra_no_semijoin.result
  12. 160
      mysql-test/r/subselect_mat.result
  13. 30
      mysql-test/r/subselect_mat_cost.result
  14. 12
      mysql-test/r/subselect_mat_cost_bugs.result
  15. 2
      mysql-test/r/subselect_no_mat.result
  16. 2
      mysql-test/r/subselect_no_opts.result
  17. 16
      mysql-test/r/subselect_no_scache.result
  18. 58
      mysql-test/r/subselect_no_semijoin.result
  19. 50
      mysql-test/r/subselect_partial_match.result
  20. 30
      mysql-test/r/subselect_sj.result
  21. 28
      mysql-test/r/subselect_sj2.result
  22. 28
      mysql-test/r/subselect_sj2_jcl6.result
  23. 28
      mysql-test/r/subselect_sj2_mat.result
  24. 30
      mysql-test/r/subselect_sj_jcl6.result
  25. 110
      mysql-test/r/subselect_sj_mat.result
  26. 28
      mysql-test/r/subselect_sj_nonmerged.result
  27. 6
      mysql-test/suite/pbxt/r/subselect.result
  28. 64
      sql/sql_lex.cc
  29. 2
      sql/sql_select.cc

12
mysql-test/r/func_group.result
View File

@ -1865,7 +1865,7 @@ SELECT v
FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'j'
@ -1891,7 +1891,7 @@ SELECT v
FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
#
# 3) Test that subquery materialization is setup for query with
@ -1915,7 +1915,7 @@ SELECT v
FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
#
# 4) Test that subquery materialization is setup for query with
@ -1940,7 +1940,7 @@ SELECT v
FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
set optimizer_switch=@tmp_optimizer_switch;
@ -1967,8 +1967,8 @@ SELECT v
FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using where; Using index
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
set @@optimizer_switch=@save_optimizer_switch;
#
# Cleanup for BUG#46680

2
mysql-test/r/group_by.result
View File

@ -1544,7 +1544,7 @@ EXPLAIN SELECT 1 FROM t1 WHERE a IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index PRIMARY,i2 PRIMARY 4 NULL 144 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 144
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144
CREATE TABLE t2 (a INT, b INT, KEY(a));
INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4);
EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2;

2
mysql-test/r/group_min_max.result
View File

@ -2403,7 +2403,7 @@ a IN (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 8 Using where
1 PRIMARY t1_outer ref a a 5 <subquery2>.max(b) 2 Using index
2 SUBQUERY t1 range NULL a 5 NULL 8 Using index for group-by
2 MATERIALIZED t1 range NULL a 5 NULL 8 Using index for group-by
EXPLAIN SELECT 1 FROM t1 AS t1_outer GROUP BY a HAVING
a > (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2);
id select_type table type possible_keys key key_len ref rows Extra

4
mysql-test/r/myisam_icp.result
View File

@ -763,8 +763,8 @@ t2.b NOT IN (SELECT t4.b FROM t3 STRAIGHT_JOIN t4 WHERE t4.b <= 2 AND t4.c = t3.
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 2
2 SUBQUERY t4 range b b 5 NULL 1 Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t4 range b b 5 NULL 1 Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
SELECT * FROM t1 LEFT JOIN t2 ON t1.c=t2.b
WHERE
t2.b NOT IN (SELECT t4.b FROM t3 STRAIGHT_JOIN t4 WHERE t4.b <= 2 AND t4.c = t3.c);

16
mysql-test/r/subselect.result
View File

@ -2973,7 +2973,7 @@ explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FR
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 10 func,func 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`flag` = 'N'))
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
@ -3563,7 +3563,7 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
ALTER TABLE t1 ADD INDEX(a);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
@ -3575,7 +3575,7 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL a NULL NULL NULL 9 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
DROP TABLE t1;
create table t1( f1 int,f2 int);
insert into t1 values (1,1),(2,2);
@ -4466,14 +4466,14 @@ EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary
Warnings:
Note 1003 select 1 AS `1` from <materialize> (select 1 from `test`.`t1` group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`1` = 1)
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary
Warnings:
Note 1003 select 1 AS `1` from <materialize> (select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`1` = 1)
DROP TABLE t1;
@ -5160,8 +5160,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot1 ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 24 Using where
1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it2 ALL NULL NULL NULL NULL 4
2 SUBQUERY it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)
2 MATERIALIZED it2 ALL NULL NULL NULL NULL 4
2 MATERIALIZED it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)
DROP TABLE IF EXISTS ot1, ot4, it2, it3;
#
# Bug#729039: NULL keys used to evaluate subquery
@ -5861,7 +5861,7 @@ SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquer
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index
2 SUBQUERY t1 index NULL a 4 NULL 2 Using index
2 MATERIALIZED t1 index NULL a 4 NULL 2 Using index
SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
a
2009-01-01

4
mysql-test/r/subselect3.result
View File

@ -1180,7 +1180,7 @@ explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t3 ref a a 5 test.t2.a 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
select * from t3 where a in (select a from t2);
a filler
1 filler
@ -1474,7 +1474,7 @@ FROM t3
);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 2 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (not(<expr_cache><(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9))>(<in_optimizer>((select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)),(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)) in ( <materialize> (select `test`.`t3`.`b` from `test`.`t3` ), <primary_index_lookup>(9 in <temporary table> on distinct_key where ((9 = `<subquery3>`.`b`))))))))

4
mysql-test/r/subselect3_jcl6.result
View File

@ -1189,7 +1189,7 @@ explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t3 ref a a 5 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
select * from t3 where a in (select a from t2);
a filler
1 filler
@ -1483,7 +1483,7 @@ FROM t3
);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 2 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (not(<expr_cache><(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9))>(<in_optimizer>((select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)),(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)) in ( <materialize> (select `test`.`t3`.`b` from `test`.`t3` ), <primary_index_lookup>(9 in <temporary table> on distinct_key where ((9 = `<subquery3>`.`b`))))))))

116
mysql-test/r/subselect4.result
View File

@ -337,8 +337,8 @@ WHERE PTYPE = 'Design'));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
@ -352,14 +352,14 @@ EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
DROP INDEX t1_IDX ON t1;
CREATE INDEX t1_IDX ON t1(EMPNUM);
@ -375,8 +375,8 @@ WHERE PTYPE = 'Design'));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
@ -390,14 +390,14 @@ EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
DROP INDEX t1_IDX ON t1;
EXPLAIN SELECT EMPNAME
@ -412,8 +412,8 @@ WHERE PTYPE = 'Design'));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
@ -427,14 +427,14 @@ EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
SET SESSION optimizer_switch = @old_optimizer_switch;
SET SESSION join_cache_level = @old_join_cache_level;
@ -560,8 +560,8 @@ WHERE PTYPE = 'Design'));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
@ -575,14 +575,14 @@ EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
DROP INDEX t1_IDX ON t1;
CREATE INDEX t1_IDX ON t1(EMPNUM);
@ -598,8 +598,8 @@ WHERE PTYPE = 'Design'));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
@ -613,14 +613,14 @@ EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
DROP INDEX t1_IDX ON t1;
EXPLAIN SELECT EMPNAME
@ -635,8 +635,8 @@ WHERE PTYPE = 'Design'));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
FROM t1
WHERE EMPNUM IN
@ -650,14 +650,14 @@ EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
SET SESSION optimizer_switch = @old_optimizer_switch;
SET SESSION join_cache_level = @old_join_cache_level;
@ -716,7 +716,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ref f3 f3 5 const 0 Using index condition
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY <subquery3> eq_ref distinct_key distinct_key 5 test.t1.f10 1
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using temporary
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using temporary
SELECT * FROM t1
WHERE f3 = (
SELECT t1.f3 FROM t1
@ -731,7 +731,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ref f3 f3 5 const 0 Using index condition
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY <subquery3> eq_ref distinct_key distinct_key 10 test.t1.f10,test.t1.f10 1
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using temporary
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using temporary
SELECT * FROM t1
WHERE f3 = (
SELECT f3 FROM t1
@ -750,21 +750,21 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
f1 f2
EXPLAIN
@ -779,14 +779,14 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
f1 f2
EXPLAIN
@ -936,21 +936,21 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
@ -965,14 +965,14 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
@ -1158,7 +1158,7 @@ WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system PRIMARY NULL NULL NULL 1
1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
2 SUBQUERY t1 index NULL f2 4 NULL 2 Using index
2 MATERIALIZED t1 index NULL f2 4 NULL 2 Using index
SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
@ -1249,7 +1249,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2);
c1 c1 c1
EXPLAIN
@ -1258,7 +1258,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
1 PRIMARY t4 index NULL PRIMARY 3 NULL 2 Using index; Using join buffer (flat, BNL join)
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);
c1 c1
drop table t1, t2, t3, t4;
@ -1534,7 +1534,7 @@ EXPLAIN
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2
3 DERIVED t1 system NULL NULL NULL NULL 1
4 UNION t2 system NULL NULL NULL NULL 1
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
@ -1661,7 +1661,7 @@ WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT f2 , f1 FROM t0 GROUP BY f2 , f1 );
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY alias2 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY alias1 index NULL PRIMARY 4 NULL 2 Using where; Using index
2 SUBQUERY t0 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t0 ALL NULL NULL NULL NULL 2
SELECT alias2.f1 , alias2.f2
FROM t0 AS alias1
RIGHT JOIN t0 AS alias2 ON alias2.f10
@ -1880,7 +1880,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL col_int_key 5 NULL 2 Using index
2 SUBQUERY SUBQUERY2_t1 index NULL col_int_key 5 NULL 2 Using index
2 SUBQUERY SUBQUERY2_t2 ALL col_varchar_key NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 Using temporary
SELECT col_int_key
FROM t2
WHERE (SELECT SUBQUERY2_t1.col_int_key
@ -1927,7 +1927,7 @@ EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
PREPARE st1 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st1;
f1 f2 f3
@ -1957,7 +1957,7 @@ EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
PREPARE st3 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st3;
f1 f2 f3
@ -1989,7 +1989,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1 Using temporary; Using filesort
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
3 MATERIALIZED t1 system NULL NULL NULL NULL 0 const row not found
PREPARE st1 FROM "
SELECT t2.f1, (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
FROM t2 JOIN t3 ON t3.f4 = t2.f4
@ -2021,7 +2021,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY t3 system NULL NULL NULL NULL 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.f4
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;

2
mysql-test/r/subselect_cache.result
View File

@ -1807,7 +1807,7 @@ set optimizer_switch='default,semijoin=off,materialization=on,subquery_cache=on'
explain select * from t1 where a in (select pk from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 15 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 10
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 10
flush status;
select * from t1 where a in (select pk from t2);
a b

2
mysql-test/r/subselect_extra.result
View File

@ -308,7 +308,7 @@ EXPLAIN SELECT 1 FROM t1 WHERE a IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index PRIMARY,i2 PRIMARY 4 NULL 144 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 144
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144
CREATE TABLE t2 (a INT, b INT, KEY(a));
INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4);
EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2;

8
mysql-test/r/subselect_extra_no_semijoin.result
View File

@ -311,7 +311,7 @@ EXPLAIN SELECT 1 FROM t1 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 144 Using where; Using index
2 SUBQUERY t1 ALL NULL NULL NULL NULL 144
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144
CREATE TABLE t2 (a INT, b INT, KEY(a));
INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4);
EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2;
@ -324,7 +324,7 @@ EXPLAIN SELECT 1 FROM t2 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index
2 SUBQUERY t1 ALL NULL NULL NULL NULL 144
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144
DROP TABLE t1, t2;
#
# From derived_view.test
@ -349,7 +349,7 @@ WHERE t.a IN (SELECT b FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
3 SUBQUERY t1 system NULL NULL NULL NULL 1 100.00
3 MATERIALIZED t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <expr_cache><0>(<in_optimizer>(0,0 in ( <materialize> (select 0 from `test`.`t1` ), <primary_index_lookup>(0 in <temporary table> on distinct_key where ((0 = `<subquery3>`.`b`))))))
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
@ -362,7 +362,7 @@ WHERE t.a IN (SELECT b FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
2 SUBQUERY t1 system NULL NULL NULL NULL 1 100.00
2 MATERIALIZED t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <expr_cache><0>(<in_optimizer>(0,0 in ( <materialize> (select 0 from `test`.`t1` ), <primary_index_lookup>(0 in <temporary table> on distinct_key where ((0 = `<subquery2>`.`b`))))))
DROP VIEW v1;

160
mysql-test/r/subselect_mat.result
View File

@ -46,7 +46,7 @@ explain extended
select * from t1 where a1 in (select b1 from t2 where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`))))))
select * from t1 where a1 in (select b1 from t2 where b1 > '0');
@ -57,7 +57,7 @@ explain extended
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`))))))
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
@ -68,7 +68,7 @@ explain extended
select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`))))))
select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
@ -79,7 +79,7 @@ explain extended
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`min(b2)`))))))
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
@ -90,7 +90,7 @@ explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL _it1_idx # NULL 3 100.00 Using where;
2 SUBQUERY t2i index it2i1,it2i3 it2i1 # NULL 5 100.00 Using where;
2 MATERIALIZED t2i index it2i1,it2i3 it2i1 # NULL 5 100.00 Using where;
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`))))))
select * from t1i where a1 in (select b1 from t2i where b1 > '0');
@ -101,7 +101,7 @@ explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL # 18 # 3 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 # 9 # 3 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # 9 # 3 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`))))))
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
@ -112,7 +112,7 @@ explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL _it1_idx # NULL 3 100.00 Using where;
2 SUBQUERY t2i index it2i1,it2i3 it2i3 # NULL 5 100.00 Using where;
2 MATERIALIZED t2i index it2i1,it2i3 it2i3 # NULL 5 100.00 Using where;
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`))))))
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
@ -123,7 +123,7 @@ explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL # # # 3 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # # # 3 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`))))))
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
@ -134,7 +134,7 @@ explain extended
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL # # # 3 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # # # 3 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`min(b2)`))))))
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
@ -145,7 +145,7 @@ explain extended
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2i range NULL it2i3 9 NULL 3 100.00 Using index for group-by
2 MATERIALIZED t2i range NULL it2i3 9 NULL 3 100.00 Using index for group-by
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`max(b2)`))))))
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
@ -156,11 +156,11 @@ prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2)
execute st1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2i range NULL it2i3 9 NULL 3 Using index for group-by
2 MATERIALIZED t2i range NULL it2i3 9 NULL 3 Using index for group-by
execute st1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2i range NULL it2i3 9 NULL 3 Using index for group-by
2 MATERIALIZED t2i range NULL it2i3 9 NULL 3 Using index for group-by
prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
execute st2;
a1 a2
@ -174,7 +174,7 @@ explain extended
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
2 MATERIALIZED t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`min(b2)`))))))
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
@ -221,7 +221,7 @@ explain extended
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`))))))
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
@ -232,7 +232,7 @@ explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index
2 SUBQUERY t2i index NULL it2i3 18 NULL 5 100.00 Using index
2 MATERIALIZED t2i index NULL it2i3 18 NULL 5 100.00 Using index
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`))))))
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
@ -285,9 +285,9 @@ where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery4>`.`b1`) and (`test`.`t3`.`c2` = `<subquery4>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery3>`.`c1`) and (`test`.`t1`.`a2` = `<subquery3>`.`c2`)))))))
select * from t1
@ -304,9 +304,9 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL # # # 3 100.00 #
3 SUBQUERY t3i index NULL # # # 4 100.00 #
4 SUBQUERY t2i index it2i2 # # # 5 100.00 #
2 SUBQUERY t2i index it2i1,it2i3 # # # 5 100.00 #
3 MATERIALIZED t3i index NULL # # # 4 100.00 #
4 MATERIALIZED t2i index it2i2 # # # 5 100.00 #
2 MATERIALIZED t2i index it2i1,it2i3 # # # 5 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c1`,`test`.`t3i`.`c2`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `<subquery4>`.`b1`) and (`test`.`t3i`.`c2` = `<subquery4>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery3>`.`c1`) and (`test`.`t1i`.`a2` = `<subquery3>`.`c2`)))))))
select * from t1i
@ -325,11 +325,11 @@ b2 in (select c2 from t3 where c2 LIKE '%03')) and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
5 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
6 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery6>`.`b1`) and (`test`.`t3`.`c2` = `<subquery6>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery5>`.`c1`) and (`test`.`t1`.`a2` = `<subquery5>`.`c2`)))))))
select * from t1
@ -349,10 +349,10 @@ b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
5 SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where
6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
5 MATERIALIZED t3c ALL NULL NULL NULL NULL 4 100.00 Using where
6 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 SUBQUERY t3b ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
@ -381,15 +381,15 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL # # # 3 100.00 #
5 SUBQUERY t3 ALL NULL # # # 4 100.00 #
6 SUBQUERY t2i index it2i2 # # # 5 100.00 #
2 SUBQUERY t2 ALL NULL # # # 5 100.00 #
4 SUBQUERY t3 ALL NULL # # # 4 100.00 #
3 SUBQUERY t3 ALL NULL # # # 4 100.00 #
5 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
6 MATERIALIZED t2i index it2i2 # # # 5 100.00 #
2 MATERIALIZED t2 ALL NULL # # # 5 100.00 #
4 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
3 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
7 UNION t1i index NULL # # # 3 100.00 #
9 SUBQUERY t3i index NULL # # # 4 100.00 #
10 SUBQUERY t2i index it2i2 # # # 5 100.00 #
8 SUBQUERY t2i index it2i1,it2i3 # # # 5 100.00 #
9 MATERIALIZED t3i index NULL # # # 4 100.00 #
10 MATERIALIZED t2i index it2i2 # # # 5 100.00 #
8 MATERIALIZED t2i index it2i1,it2i3 # # # 5 100.00 #
NULL UNION RESULT <union1,7> ALL NULL # # # NULL NULL #
Warnings:
Note 1003 (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1`.`a2` = `<subquery2>`.`b2`)))))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where ((`test`.`t3`.`c1` = `<subquery6>`.`b1`) and (`test`.`t3`.`c2` = `<subquery6>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery5>`.`c1`) and (`test`.`t1`.`a2` = `<subquery5>`.`c2`)))))))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery8>`.`b1`) and (`test`.`t1i`.`a2` = `<subquery8>`.`b2`)))))) and <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c1`,`test`.`t3i`.`c2`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0') ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where ((`test`.`t3i`.`c1` = `<subquery10>`.`b1`) and (`test`.`t3i`.`c2` = `<subquery10>`.`b2`)))))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery9>`.`c1`) and (`test`.`t1i`.`a2` = `<subquery9>`.`c2`))))))))
@ -415,8 +415,8 @@ where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
@ -438,8 +438,8 @@ a1 = c1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
@ -485,7 +485,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
5 DEPENDENT SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where
6 DEPENDENT SUBQUERY t2i index_subquery it2i1,it2i2,it2i3 it2i3 18 func,func 2 100.00 Using index; Using where
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 SUBQUERY t3b ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
@ -622,7 +622,7 @@ from t1_16
where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
2 MATERIALIZED t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select substr(`test`.`t2_16`.`b1`,1,16) from `test`.`t2_16` where (`test`.`t2_16`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `<subquery2>`.`substring(b1,1,16)`))))))
select left(a1,7), left(a2,7)
@ -651,7 +651,7 @@ from t1_16
where a1 in (select group_concat(b1) from t2_16 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_16`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -673,7 +673,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
3 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><concat(`test`.`t1`.`a1`,'x')>(<in_optimizer>(concat(`test`.`t1`.`a1`,'x'),<exists>(select left(`test`.`t1_16`.`a1`,8) from `test`.`t1_16` where (<expr_cache><`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` join `test`.`t2` where ((`test`.`t2`.`b2` = substr(`test`.`t2_16`.`b2`,1,6)) and <expr_cache><`test`.`t2`.`b1`>(<in_optimizer>(`test`.`t2`.`b1`,`test`.`t2`.`b1` in ( <materialize> (select `test`.`t3`.`c1` from `test`.`t3` where (`test`.`t3`.`c2` > '0') ), <primary_index_lookup>(`test`.`t2`.`b1` in <temporary table> on distinct_key where ((`test`.`t2`.`b1` = `<subquery4>`.`c1`)))))) and (<cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`) and (<cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`))))) and (<cache>(concat(`test`.`t1`.`a1`,'x')) = left(`test`.`t1_16`.`a1`,8))))))
drop table t1_16, t2_16, t3_16;
@ -735,7 +735,7 @@ from t1_512
where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select substr(`test`.`t2_512`.`b1`,1,512) from `test`.`t2_512` where (`test`.`t2_512`.`b1` > '0') ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `<subquery2>`.`substring(b1,1,512)`))))))
select left(a1,7), left(a2,7)
@ -749,7 +749,7 @@ from t1_512
where a1 in (select group_concat(b1) from t2_512 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -762,7 +762,7 @@ from t1_512
where a1 in (select group_concat(b1) from t2_512 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -842,7 +842,7 @@ from t1_1024
where a1 in (select group_concat(b1) from t2_1024 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -855,7 +855,7 @@ from t1_1024
where a1 in (select group_concat(b1) from t2_1024 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -935,7 +935,7 @@ from t1_1025
where a1 in (select group_concat(b1) from t2_1025 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -948,7 +948,7 @@ from t1_1025
where a1 in (select group_concat(b1) from t2_1025 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where ((`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`))))))
select left(a1,7), left(a2,7)
@ -969,7 +969,7 @@ from t1bit
where (a1, a2) in (select b1, b2 from t2bit);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1bit ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2bit ALL NULL NULL NULL NULL 3 100.00
2 MATERIALIZED t2bit ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` where <expr_cache><`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`>(<in_optimizer>((`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`),(`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`) in ( <materialize> (select `test`.`t2bit`.`b1`,`test`.`t2bit`.`b2` from `test`.`t2bit` ), <primary_index_lookup>(`test`.`t1bit`.`a1` in <temporary table> on distinct_key where ((`test`.`t1bit`.`a1` = `<subquery2>`.`b1`) and (`test`.`t1bit`.`a2` = `<subquery2>`.`b2`))))))
select bin(a1), bin(a2)
@ -1040,7 +1040,7 @@ explain extended
select a from t1 where a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 where a in (select c from t2 where d >= 20);
@ -1054,7 +1054,7 @@ explain extended
select a from t1 where a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using where; Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 where a in (select c from t2 where d >= 20);
@ -1068,7 +1068,7 @@ explain extended
select a from t1 where a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using where; Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 where a in (select c from t2 where d >= 20);
@ -1081,7 +1081,7 @@ explain extended
select a from t1 group by a having a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 group by a having a in (select c from t2 where d >= 20);
@ -1093,7 +1093,7 @@ explain extended
select a from t1 group by a having a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 group by a having a in (select c from t2 where d >= 20);
@ -1151,7 +1151,7 @@ insert into t1 values (5);
explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
min(a1)
NULL
@ -1170,7 +1170,7 @@ set @@optimizer_switch='semijoin=off';
explain select min(a1) from t1 where 7 in (select b1 from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t2 system NULL NULL NULL NULL 0 const row not found
select min(a1) from t1 where 7 in (select b1 from t2);
min(a1)
NULL
@ -1200,7 +1200,7 @@ insert into t1 values ('aa', 'aaaa');
explain select a,b from t1 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
select a,b from t1 where b in (select a from t1);
a b
prepare st1 from "select a,b from t1 where b in (select a from t1)";
@ -1237,8 +1237,8 @@ GROUP BY t3i
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY t4 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 2 Using temporary
DROP TABLE t1,t2,t3,t4;
CREATE TABLE t1 (
pk INTEGER AUTO_INCREMENT,
@ -1345,7 +1345,7 @@ SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1;
@ -1374,7 +1374,7 @@ WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t1 system NULL NULL NULL NULL 1
2 MATERIALIZED t1 system NULL NULL NULL NULL 1
SELECT * FROM t1 JOIN t2 USING (f1)
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
f1 pk pk
@ -1448,7 +1448,7 @@ EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
COUNT(*)
2
@ -1472,7 +1472,7 @@ EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
pk
2
@ -1513,7 +1513,7 @@ insert into t1 values (0),(1),(2);
explain select a, a in (select a from t1) from t0;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 3
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
select a, a in (select a from t1) from t0;
a a in (select a from t1)
0 1
@ -1740,7 +1740,7 @@ insert into t1 values (0),(1),(2);
explain select a, a in (select a from t1) from t0;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 3
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
select a, a in (select a from t1) from t0;
a a in (select a from t1)
0 1
@ -1772,7 +1772,7 @@ EXPLAIN
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 system NULL NULL NULL NULL 1
2 MATERIALIZED t2 system NULL NULL NULL NULL 1
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2);
c1_sum
NULL
@ -1780,7 +1780,7 @@ EXPLAIN
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2) HAVING c1_sum;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 system NULL NULL NULL NULL 1
2 MATERIALIZED t2 system NULL NULL NULL NULL 1
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2) HAVING c1_sum;
c1_sum
drop table t1, t2;
@ -1799,7 +1799,7 @@ SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
2 SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t3 system NULL NULL NULL NULL 0 const row not found
SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3);
i
10
@ -1808,7 +1808,7 @@ SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
2 SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found
2 MATERIALIZED t3 system NULL NULL NULL NULL 0 const row not found
SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3);
i
10
@ -1850,7 +1850,7 @@ EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
pk
2
@ -1895,7 +1895,7 @@ EXPLAIN
SELECT * FROM t2 WHERE (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM t2 WHERE (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1);
f2
@ -1912,7 +1912,7 @@ EXPLAIN
SELECT * FROM t2 WHERE (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM t2 WHERE (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1);
f2
@ -1941,7 +1941,7 @@ SELECT (f1, f2, f3) NOT IN
FROM t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using filesort
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 Using filesort
SELECT (f1, f2, f3) NOT IN
(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3)
FROM t2;
@ -1964,7 +1964,7 @@ EXPLAIN EXTENDED
SELECT MAX(t1.b) AS max_res FROM t1 WHERE (9) IN (SELECT a FROM t2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL b 5 NULL 2 100.00 Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 100.00
Warnings:
Note 1003 select max(`test`.`t1`.`b`) AS `max_res` from `test`.`t1` where <expr_cache><9>(<in_optimizer>(9,9 in ( <materialize> (select `test`.`t2`.`a` from `test`.`t2` ), <primary_index_lookup>(9 in <temporary table> on distinct_key where ((9 = `<subquery2>`.`a`))))))
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
@ -1992,7 +1992,7 @@ FROM t1
WHERE (a, b) NOT IN (SELECT a, b FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT *
FROM t1
WHERE (a, b) NOT IN (SELECT a, b FROM t2);
@ -2004,7 +2004,7 @@ SELECT a, b, (a, b) NOT IN (SELECT a, b FROM t2) as sq
FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT a, b, (a, b) NOT IN (SELECT a, b FROM t2) as sq
FROM t1;
a b sq

30
mysql-test/r/subselect_mat_cost.result
View File

@ -65,7 +65,7 @@ Name LIKE 'L%') AND
surfacearea > 1000000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country ALL Name,SurfaceArea NULL NULL NULL 239 Using where
2 SUBQUERY City ALL Population,Country NULL NULL NULL 4080 Using where
2 MATERIALIZED City ALL Population,Country NULL NULL NULL 4080 Using where
SELECT Name FROM Country
WHERE (Code IN (select Country from City where City.Population > 100000) OR
Name LIKE 'L%') AND
@ -134,7 +134,7 @@ City.name LIKE '%Island%');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country ALL PRIMARY,SurfaceArea NULL NULL NULL 239 Using where
1 PRIMARY City ref Country Country 3 world.Country.Code 18 Using where
2 SUBQUERY CountryLanguage ALL Percentage,Language NULL NULL NULL 984 Using where
2 MATERIALIZED CountryLanguage ALL Percentage,Language NULL NULL NULL 984 Using where
SELECT *
FROM Country, City
WHERE City.Country = Country.Code AND
@ -204,7 +204,7 @@ OR
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country ALL PRIMARY,SurfaceArea NULL NULL NULL 239 Using where
1 PRIMARY City ref Country Country 3 world.Country.Code 18 Using where
3 SUBQUERY CountryLanguage index PRIMARY,Language PRIMARY 33 NULL 984 Using index
3 MATERIALIZED CountryLanguage index PRIMARY,Language PRIMARY 33 NULL 984 Using index
2 DEPENDENT SUBQUERY CountryLanguage unique_subquery PRIMARY,Percentage,Language PRIMARY 33 func,func 1 Using where
SELECT City.Name, Country.Name
FROM City,Country
@ -233,7 +233,7 @@ where City.id not in (select capital from Country
where capital is not null and population < 100000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY City index NULL PRIMARY 4 NULL 4080 Using where; Using index
2 SUBQUERY Country ALL NULL NULL NULL NULL 239 Using where
2 MATERIALIZED Country ALL NULL NULL NULL NULL 239 Using where
Q2.2e:
Countries that speak French, but do not speak English
@ -287,7 +287,7 @@ AND Code = Country;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY CountryLanguage range PRIMARY,Language Language 30 NULL 45 Using index condition; Using where; Rowid-ordered scan
1 PRIMARY Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using index condition
2 SUBQUERY CountryLanguage ref PRIMARY,Language Language 30 const 47 Using index condition
2 MATERIALIZED CountryLanguage ref PRIMARY,Language Language 30 const 47 Using index condition
SELECT Country.Name
FROM Country, CountryLanguage
WHERE Code NOT IN (SELECT Country FROM CountryLanguage WHERE Language = 'English')
@ -371,8 +371,8 @@ FROM City LEFT JOIN Country ON (Country = Code)
HAVING City.Name LIKE "Santa%");
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY CountryLanguage index NULL PRIMARY 33 NULL 984 Using where; Using index
2 SUBQUERY City ALL NULL NULL NULL NULL 4080
2 SUBQUERY Country eq_ref PRIMARY PRIMARY 3 world.City.Country 1 Using index
2 MATERIALIZED City ALL NULL NULL NULL NULL 4080
2 MATERIALIZED Country eq_ref PRIMARY PRIMARY 3 world.City.Country 1 Using index
select count(*)
from CountryLanguage
where (Language, Country) NOT IN
@ -399,10 +399,10 @@ WHERE Code = Country GROUP BY Code)
order by Country;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY CountryLanguage index NULL PRIMARY 33 NULL 984 Using where; Using index
3 SUBQUERY CountryLanguage index PRIMARY PRIMARY 33 NULL 984 Using index; Using temporary
3 SUBQUERY Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using index
2 SUBQUERY CountryLanguage index PRIMARY PRIMARY 33 NULL 984 Using index; Using temporary
2 SUBQUERY Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using index
3 MATERIALIZED CountryLanguage index PRIMARY PRIMARY 33 NULL 984 Using index; Using temporary
3 MATERIALIZED Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using index
2 MATERIALIZED CountryLanguage index PRIMARY PRIMARY 33 NULL 984 Using index; Using temporary
2 MATERIALIZED Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using index
select count(*)
from CountryLanguage
where
@ -429,7 +429,7 @@ capital is null);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country ALL NULL NULL NULL NULL 239 Using where
1 PRIMARY City eq_ref PRIMARY PRIMARY 4 world.Country.Capital 1 Using where
2 SUBQUERY City index NULL CityName 35 NULL 4080 Using index
2 MATERIALIZED City index NULL CityName 35 NULL 4080 Using index
select * from Country, City
where capital = id and
(City.name in (SELECT name FROM City
@ -450,7 +450,7 @@ WHERE Country.Code NOT IN
(SELECT Country FROM City GROUP BY Name HAVING COUNT(Name) = 1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country ALL NULL NULL NULL NULL 239 Using where
2 SUBQUERY City ALL NULL NULL NULL NULL 4080 Using temporary
2 MATERIALIZED City ALL NULL NULL NULL NULL 4080 Using temporary
SELECT Name
FROM Country
WHERE Country.Code NOT IN
@ -480,7 +480,7 @@ from City
where City.population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY City range Population Population 5 NULL 4 Using index condition; Rowid-ordered scan
2 SUBQUERY Country ALL NULL NULL NULL NULL 239 Using where
2 MATERIALIZED Country ALL NULL NULL NULL NULL 239 Using where
select Name, City.id in (select capital from Country where capital is not null) as is_capital
from City
where City.population > 10000000;
@ -514,7 +514,7 @@ HAVING City.Name IN (select Name from Country where population < 1000000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY City ALL Country NULL NULL NULL 4080 Using temporary; Using filesort
1 PRIMARY Country eq_ref PRIMARY PRIMARY 3 world.City.Country 1 Using index
2 SUBQUERY Country ALL Name NULL NULL NULL 239 Using where
2 MATERIALIZED Country ALL Name NULL NULL NULL 239 Using where
SELECT City.Name, City.Population
FROM City JOIN Country ON City.Country = Country.Code
GROUP BY City.Name

12
mysql-test/r/subselect_mat_cost_bugs.result
View File

@ -260,8 +260,8 @@ WHERE alias1.f11 OR alias1.f3 = 50 AND alias1.f10
);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY alias1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY alias2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED alias1 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED alias2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t2
WHERE ( f12 ) IN (
SELECT alias2.f3
@ -277,8 +277,8 @@ FROM t1 AS alias1, t1 AS alias2
WHERE (alias2.f10 = alias1.f11) AND (alias1.f11 OR alias1.f3 = 50 AND alias1.f10));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY alias1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY alias2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED alias1 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED alias2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t2
WHERE ( f12 ) IN (
SELECT alias2.f3
@ -380,14 +380,14 @@ set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_
explain select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
c1 c2
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
explain select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
c1 c2
drop table t1, t2;

2
mysql-test/r/subselect_no_mat.result
View File

@ -5860,7 +5860,7 @@ SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquer
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index
2 SUBQUERY t1 index NULL a 4 NULL 2 Using index
2 MATERIALIZED t1 index NULL a 4 NULL 2 Using index
SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
a
2009-01-01

2
mysql-test/r/subselect_no_opts.result
View File

@ -5856,7 +5856,7 @@ SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquer
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index
2 SUBQUERY t1 index NULL a 4 NULL 2 Using index
2 MATERIALIZED t1 index NULL a 4 NULL 2 Using index
SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
a
2009-01-01

16
mysql-test/r/subselect_no_scache.result
View File

@ -2977,7 +2977,7 @@ explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FR
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 10 func,func 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`flag` = 'N'))
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
@ -3567,7 +3567,7 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
ALTER TABLE t1 ADD INDEX(a);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
@ -3579,7 +3579,7 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL a NULL NULL NULL 9 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
DROP TABLE t1;
create table t1( f1 int,f2 int);
insert into t1 values (1,1),(2,2);
@ -4470,14 +4470,14 @@ EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary
Warnings:
Note 1003 select 1 AS `1` from <materialize> (select 1 from `test`.`t1` group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`1` = 1)
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary
Warnings:
Note 1003 select 1 AS `1` from <materialize> (select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`1` = 1)
DROP TABLE t1;
@ -5164,8 +5164,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot1 ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 24 Using where
1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it2 ALL NULL NULL NULL NULL 4
2 SUBQUERY it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)
2 MATERIALIZED it2 ALL NULL NULL NULL NULL 4
2 MATERIALIZED it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)
DROP TABLE IF EXISTS ot1, ot4, it2, it3;
#
# Bug#729039: NULL keys used to evaluate subquery
@ -5865,7 +5865,7 @@ SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquer
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index
2 SUBQUERY t1 index NULL a 4 NULL 2 Using index
2 MATERIALIZED t1 index NULL a 4 NULL 2 Using index
SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
a
2009-01-01

58
mysql-test/r/subselect_no_semijoin.result
View File

@ -907,7 +907,7 @@ a t1.a in (select t2.a from t2)
explain extended SELECT t1.a, t1.a in (select t2.a from t2) FROM t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index
2 SUBQUERY t2 index a a 5 NULL 3 100.00 Using index
2 MATERIALIZED t2 index a a 5 NULL 3 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`a` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`a`)))))) AS `t1.a in (select t2.a from t2)` from `test`.`t1`
CREATE TABLE t3 (a int(11) default '0');
@ -921,8 +921,8 @@ a t1.a in (select t2.a from t2,t3 where t3.a=t2.a)
explain extended SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 100.00 Using index
2 SUBQUERY t2 index a a 5 NULL 3 100.00 Using index
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 index a a 5 NULL 3 100.00 Using index
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`a` from `test`.`t2` join `test`.`t3` where (`test`.`t3`.`a` = `test`.`t2`.`a`) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`a`)))))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1`
drop table t1,t2,t3;
@ -1437,7 +1437,7 @@ a
explain extended select * from t2 where t2.a in (select a from t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index
2 SUBQUERY t1 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index
2 MATERIALIZED t1 index PRIMARY PRIMARY 4 NULL 4 100.00 Using index
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `<subquery2>`.`a`))))))
select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
@ -1447,7 +1447,7 @@ a
explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index
2 SUBQUERY t1 ALL PRIMARY NULL NULL NULL 4 100.00 Using where
2 MATERIALIZED t1 ALL PRIMARY NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` where (`test`.`t1`.`b` <> 30) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `<subquery2>`.`a`))))))
select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);
@ -1457,8 +1457,8 @@ a
explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 100.00 Using where; Using index
2 SUBQUERY t3 index PRIMARY PRIMARY 4 NULL 3 100.00 Using index
2 SUBQUERY t1 ALL PRIMARY NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t3 index PRIMARY PRIMARY 4 NULL 3 100.00 Using index
2 MATERIALIZED t1 ALL PRIMARY NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where (`test`.`t1`.`b` = `test`.`t3`.`a`) ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where ((`test`.`t2`.`a` = `<subquery2>`.`a`))))))
drop table t1, t2, t3;
@ -1608,25 +1608,25 @@ a3 1
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index
2 SUBQUERY t2 index s1 s1 6 NULL 2 100.00 Using index
2 MATERIALIZED t2 index s1 s1 6 NULL 2 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,`test`.`t1`.`s1` in ( <materialize> (select `test`.`t2`.`s1` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`s1` in <temporary table> on distinct_key where ((`test`.`t1`.`s1` = `<subquery2>`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index
2 SUBQUERY t2 index s1 s1 6 NULL 2 100.00 Using index
2 MATERIALIZED t2 index s1 s1 6 NULL 2 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,`test`.`t1`.`s1` in ( <materialize> (select `test`.`t2`.`s1` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`s1` in <temporary table> on distinct_key where ((`test`.`t1`.`s1` = `<subquery2>`.`s1`)))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index
2 SUBQUERY t2 index s1 s1 6 NULL 2 100.00 Using index
2 MATERIALIZED t2 index s1 s1 6 NULL 2 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,`test`.`t1`.`s1` in ( <materialize> (select `test`.`t2`.`s1` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`s1` in <temporary table> on distinct_key where ((`test`.`t1`.`s1` = `<subquery2>`.`s1`)))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 100.00 Using index
2 SUBQUERY t2 index s1 s1 6 NULL 2 50.00 Using where; Using index
2 MATERIALIZED t2 index s1 s1 6 NULL 2 50.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<expr_cache><`test`.`t1`.`s1`>(<in_optimizer>(`test`.`t1`.`s1`,`test`.`t1`.`s1` in ( <materialize> (select `test`.`t2`.`s1` from `test`.`t2` where (`test`.`t2`.`s1` < 'a2') ), <primary_index_lookup>(`test`.`t1`.`s1` in <temporary table> on distinct_key where ((`test`.`t1`.`s1` = `<subquery2>`.`s1`)))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`
drop table t1,t2;
@ -1881,7 +1881,7 @@ id text
explain extended select * from t1 where id not in (select id from t1 where id < 8);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 12 100.00 Using where
2 SUBQUERY t1 range PRIMARY PRIMARY 4 NULL 7 100.00 Using where; Using index
2 MATERIALIZED t1 range PRIMARY PRIMARY 4 NULL 7 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<expr_cache><`test`.`t1`.`id`>(<in_optimizer>(`test`.`t1`.`id`,`test`.`t1`.`id` in ( <materialize> (select `test`.`t1`.`id` from `test`.`t1` where (`test`.`t1`.`id` < 8) ), <primary_index_lookup>(`test`.`t1`.`id` in <temporary table> on distinct_key where ((`test`.`t1`.`id` = `<subquery2>`.`id`))))))))
explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);
@ -2967,19 +2967,19 @@ one two test
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`one`,`test`.`t1`.`two`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),(`test`.`t1`.`one`,`test`.`t1`.`two`) in ( <materialize> (select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') ), <primary_index_lookup>(`test`.`t1`.`one` in <temporary table> on distinct_key where ((`test`.`t1`.`one` = `<subquery2>`.`one`) and (`test`.`t1`.`two` = `<subquery2>`.`two`)))))) AS `test` from `test`.`t1`
explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` where <expr_cache><`test`.`t1`.`one`,`test`.`t1`.`two`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),(`test`.`t1`.`one`,`test`.`t1`.`two`) in ( <materialize> (select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = 'N') ), <primary_index_lookup>(`test`.`t1`.`one` in <temporary table> on distinct_key where ((`test`.`t1`.`one` = `<subquery2>`.`one`) and (`test`.`t1`.`two` = `<subquery2>`.`two`))))))
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<expr_cache><`test`.`t1`.`one`,`test`.`t1`.`two`>(<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),(`test`.`t1`.`one`,`test`.`t1`.`two`) in ( <materialize> (select `test`.`t2`.`one`,`test`.`t2`.`two` from `test`.`t2` where (`test`.`t2`.`flag` = '0') group by `test`.`t2`.`one`,`test`.`t2`.`two` ), <primary_index_lookup>(`test`.`t1`.`one` in <temporary table> on distinct_key where ((`test`.`t1`.`one` = `<subquery2>`.`one`) and (`test`.`t1`.`two` = `<subquery2>`.`two`)))))) AS `test` from `test`.`t1`
DROP TABLE t1,t2;
@ -3162,7 +3162,7 @@ INSERT INTO t2 VALUES (1),(2),(3);
EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 3
2 SUBQUERY t1 index a a 5 NULL 5 Using index
2 MATERIALIZED t1 index a a 5 NULL 5 Using index
SELECT a, a IN (SELECT a FROM t1) FROM t2;
a a IN (SELECT a FROM t1)
1 1
@ -3562,7 +3562,7 @@ EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
ALTER TABLE t1 ADD INDEX(a);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
@ -3573,7 +3573,7 @@ EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
DROP TABLE t1;
create table t1( f1 int,f2 int);
insert into t1 values (1,1),(2,2);
@ -4343,7 +4343,7 @@ CREATE INDEX I2 ON t1 (b);
EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t1 index I1 I1 2 NULL 2 Using index
2 MATERIALIZED t1 index I1 I1 2 NULL 2 Using index
SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1);
a b
CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10));
@ -4353,14 +4353,14 @@ CREATE INDEX I2 ON t2 (b);
EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 index I1 I1 4 NULL 2 Using index
2 MATERIALIZED t2 index I1 I1 4 NULL 2 Using index
SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2);
a b
EXPLAIN
SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t1 index I1 I1 2 NULL 2 Using where; Using index
2 MATERIALIZED t1 index I1 I1 2 NULL 2 Using where; Using index
SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500);
a b
DROP TABLE t1,t2;
@ -4463,13 +4463,13 @@ INSERT INTO t1 VALUES (1),(2);
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary
Warnings:
Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select 1 from `test`.`t1` group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `<subquery2>`.`1`))))))
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary
Warnings:
Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select 1 from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `<subquery2>`.`1`))))))
DROP TABLE t1;
@ -5155,8 +5155,8 @@ FROM it2,it3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot1 ALL NULL NULL NULL NULL 2
1 PRIMARY ot4 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it2 ALL NULL NULL NULL NULL 4
2 SUBQUERY it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)
2 MATERIALIZED it2 ALL NULL NULL NULL NULL 4
2 MATERIALIZED it3 ALL NULL NULL NULL NULL 6 Using join buffer (flat, BNL join)
DROP TABLE IF EXISTS ot1, ot4, it2, it3;
#
# Bug#729039: NULL keys used to evaluate subquery
@ -5200,8 +5200,8 @@ INSERT INTO t2 VALUES (15,4);
EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index
2 SUBQUERY it index PRIMARY PRIMARY 4 NULL 3 Using index; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 index NULL PRIMARY 4 NULL 3 Using index
2 MATERIALIZED it index PRIMARY PRIMARY 4 NULL 3 Using index; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1);
pk i
11 0
@ -5444,7 +5444,7 @@ WHERE (t2.b , t1.c) NOT IN (SELECT * from t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 2
SELECT t2.b , t1.c
FROM t2 LEFT JOIN t1 ON t1.c < 3
WHERE (t2.b, t1.c) NOT IN (SELECT * from t3);
@ -5856,7 +5856,7 @@ SET @@optimizer_switch='semijoin=off,materialization=on,in_to_exists=off,subquer
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using where; Using index
2 SUBQUERY t1 index NULL a 4 NULL 2 Using index
2 MATERIALIZED t1 index NULL a 4 NULL 2 Using index
SELECT * FROM t1 WHERE a IN (SELECT a AS field1 FROM t1 GROUP BY field1);
a
2009-01-01

50
mysql-test/r/subselect_partial_match.result
View File

@ -74,7 +74,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
c NULL a NULL
@ -82,7 +82,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
@ -90,7 +90,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
c NULL a NULL
@ -98,7 +98,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
set @@optimizer_switch=@in_exists;
@ -129,7 +129,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
NULL y NULL NULL
@ -137,7 +137,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
@ -145,7 +145,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
NULL y NULL NULL
@ -153,7 +153,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
set @@optimizer_switch=@in_exists;
@ -188,7 +188,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
NULL g NULL NULL
@ -196,7 +196,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
@ -204,7 +204,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
NULL g NULL NULL
@ -212,7 +212,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
set @@optimizer_switch=@in_exists;
@ -247,7 +247,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
b g NULL 0
@ -255,7 +255,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
b g NULL
@ -264,7 +264,7 @@ EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
a1 a2 a3 in_res
b g NULL 0
@ -272,7 +272,7 @@ EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
a1 a2 a3
b g NULL
@ -773,7 +773,7 @@ SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00
2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using where
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 100.00
Warnings:
Note 1003 select `table1`.`a1` AS `a1`,`table1`.`a2` AS `a2` from (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b2` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery3>`.`b2`)))))))) `table1`
set optimizer_switch=@tmp_optimizer_switch;
@ -787,7 +787,7 @@ insert into t1 values (NULL, 'a21'), (NULL, 'a22');
explain select * from t1 where (a1, a2) not in (select a1, a2 from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
select * from t1 where (a1, a2) not in (select a1, a2 from t1);
a1 a2
drop table t1;
@ -821,8 +821,8 @@ SELECT t3.d , t2.c
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
2 SUBQUERY t3 system NULL NULL NULL NULL 1
2 SUBQUERY t2 system NULL NULL NULL NULL 1
2 MATERIALIZED t3 system NULL NULL NULL NULL 1
2 MATERIALIZED t2 system NULL NULL NULL NULL 1
SELECT *
FROM t1
WHERE (t1.d , t1.d) NOT IN (
@ -860,7 +860,7 @@ EXPLAIN
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
c
0
@ -869,7 +869,7 @@ EXPLAIN
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
c
0
@ -905,7 +905,7 @@ set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_
EXPLAIN SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
f3
5
@ -962,7 +962,7 @@ set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_
EXPLAIN SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2);
a b
0 NULL
@ -973,7 +973,7 @@ a b subq_res
EXPLAIN SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2 WHERE d is not NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 Using where
SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2 WHERE d is not NULL);
a b
0 NULL

30
mysql-test/r/subselect_sj.result
View File

@ -79,7 +79,7 @@ id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY A ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY B ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
2 MATERIALIZED t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`A`.`A` AS `A`,`test`.`A`.`B` AS `B`,`test`.`B`.`A` AS `A`,`test`.`B`.`B` AS `B` from `test`.`t1` left join (`test`.`t2` `A` join `test`.`t2` `B`) on((<in_optimizer>(`test`.`B`.`A`,`test`.`B`.`A` in ( <mAteriAlize> (select `test`.`t10`.`pk` from `test`.`t10` ), <primAry_index_lookup>(`test`.`B`.`A` in <temporAry tABle> on distinct_key where ((`test`.`B`.`A` = `<suBquery2>`.`pk`))))) And (`test`.`A`.`A` = `test`.`t1`.`A`))) where 1
t2 should be wrapped into OJ-nest, so we have "t1 LJ (t2 J t10)"
@ -88,7 +88,7 @@ select * from t1 left join t2 on (t2.A= t1.A And t2.A in (select pk from t10));
id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
2 MATERIALIZED t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`t2`.`A` AS `A`,`test`.`t2`.`B` AS `B` from `test`.`t1` left join `test`.`t2` on((<in_optimizer>(`test`.`t2`.`A`,`test`.`t2`.`A` in ( <mAteriAlize> (select `test`.`t10`.`pk` from `test`.`t10` ), <primAry_index_lookup>(`test`.`t2`.`A` in <temporAry tABle> on distinct_key where ((`test`.`t2`.`A` = `<suBquery2>`.`pk`))))) And (`test`.`t2`.`A` = `test`.`t1`.`A`))) where 1
we shouldn't flatten if we're going to get a join of > MAX_TABLES.
@ -726,8 +726,8 @@ FROM it1 LEFT JOIN it2 ON it2.datetime_key);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 11
1 PRIMARY ot1 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it1 index NULL int_key 4 NULL 2 Using index
2 SUBQUERY it2 ALL int_key,datetime_key NULL NULL NULL 20 Using where
2 MATERIALIZED it1 index NULL int_key 4 NULL 2 Using index
2 MATERIALIZED it2 ALL int_key,datetime_key NULL NULL NULL 20 Using where
DROP TABLE ot1, it1, it2;
# End of BUG#38075
#
@ -800,7 +800,7 @@ EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 13 func,func 1 100.00
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0);
@ -969,7 +969,7 @@ WHERE `varchar_nokey` < 'n' XOR `pk` ) ;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 func,func 1 100.00
2 SUBQUERY t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where
2 MATERIALIZED t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`))
SELECT varchar_nokey
@ -1052,8 +1052,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 14 func 1
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 14 func 1
3 SUBQUERY t3 ALL NULL NULL NULL NULL 5 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
SELECT *
FROM t1
WHERE t1.val IN (SELECT t2.val FROM t2
@ -1275,8 +1275,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
1 PRIMARY B ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY C ALL NULL NULL NULL NULL 3
3 SUBQUERY D ALL NULL NULL NULL NULL 3
2 MATERIALIZED C ALL NULL NULL NULL NULL 3
3 MATERIALIZED D ALL NULL NULL NULL NULL 3
drop table t1, t2;
#
# BUG#784441: Abort on semijoin with a view as the inner table
@ -1291,7 +1291,7 @@ SELECT * FROM t1 INNER JOIN t2 ON t2.a != 0 AND t2.a IN (SELECT * FROM v1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY <derived3> system NULL NULL NULL NULL 1
2 MATERIALIZED <derived3> system NULL NULL NULL NULL 1
3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
SELECT * FROM t1 INNER JOIN t2 ON t2.a != 0 AND t2.a IN (SELECT * FROM v1);
a a
@ -1386,8 +1386,8 @@ explain select * from t3 where t3.b in (select t2.b from t1 left join t2 on t1.a
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t3 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
select * from t3 where t3.b in (select t2.b from t1 left join t2 on t1.a=t2.a);
b
drop table t1, t2, t3;
@ -1990,8 +1990,8 @@ SELECT * FROM t1 WHERE (a) IN (SELECT a FROM t2 JOIN t3 ON b = a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t3 ALL NULL NULL NULL NULL 13 Using where
2 SUBQUERY t2 ref b b 4 test.t3.a 1 Using index
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 13 Using where
2 MATERIALIZED t2 ref b b 4 test.t3.a 1 Using index
SELECT * FROM t1 WHERE (a) IN (SELECT a FROM t2 JOIN t3 ON b = a);
a
19

28
mysql-test/r/subselect_sj2.result
View File

@ -48,7 +48,7 @@ explain select * from t2 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3
1 PRIMARY t2 ref b b 5 test.t1.a 2
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 Using where
select * from t2 where b in (select a from t1);
a b
1 1
@ -68,7 +68,7 @@ explain select * from t3 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL b NULL NULL NULL 20
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
select * from t3 where b in (select a from t1);
a b pk1 pk2 pk3
1 1 1 1 1
@ -94,7 +94,7 @@ explain select * from t3 where b in (select a from t0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 10
1 PRIMARY t3 ref b b 5 test.t0.a 1
2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
2 MATERIALIZED t0 ALL NULL NULL NULL NULL 10 Using where
set @save_ecp= @@engine_condition_pushdown;
set engine_condition_pushdown=0;
select * from t3 where b in (select A.a+B.a from t0 A, t0 B where B.a<5);
@ -148,7 +148,7 @@ from t1 ot where a in (select a from t2 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 22
1 PRIMARY ot ALL NULL NULL NULL NULL 32 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it ALL NULL NULL NULL NULL 22
2 MATERIALIZED it ALL NULL NULL NULL NULL 22
select
a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z
from t1 ot where a in (select a from t2 it);
@ -181,7 +181,7 @@ from t2 ot where a in (select a from t1 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot ALL NULL NULL NULL NULL 22
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY it ALL NULL NULL NULL NULL 32
2 MATERIALIZED it ALL NULL NULL NULL NULL 32
select
a, mid(filler1, 1,10), length(filler1)=length(filler2)
from t2 ot where a in (select a from t1 it);
@ -216,7 +216,7 @@ from t1 ot where a in (select a from t2 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 22
1 PRIMARY ot ALL NULL NULL NULL NULL 52 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it ALL NULL NULL NULL NULL 22
2 MATERIALIZED it ALL NULL NULL NULL NULL 22
select
a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z
from t1 ot where a in (select a from t2 it);
@ -249,7 +249,7 @@ from t2 ot where a in (select a from t1 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot ALL NULL NULL NULL NULL 22
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY it ALL NULL NULL NULL NULL 52
2 MATERIALIZED it ALL NULL NULL NULL NULL 52
select
a, mid(filler1, 1,10), length(filler1)=length(filler2)
from t2 ot where a in (select a from t1 it);
@ -290,9 +290,9 @@ from t0 where a in
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 10
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 9 func 1 Using where
2 SUBQUERY t1 index a a 5 NULL 10 Using where; Using index
2 SUBQUERY t2 ref a a 5 test.t1.a 1 Using index
2 SUBQUERY t3 ref a a 5 test.t1.a 1 Using index
2 MATERIALIZED t1 index a a 5 NULL 10 Using where; Using index
2 MATERIALIZED t2 ref a a 5 test.t1.a 1 Using index
2 MATERIALIZED t3 ref a a 5 test.t1.a 1 Using index
drop table t0, t1,t2,t3;
CREATE TABLE t1 (
ID int(11) NOT NULL auto_increment,
@ -370,7 +370,7 @@ SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 31
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL CountryCode NULL NULL NULL 545 Using where
2 MATERIALIZED t2 ALL CountryCode NULL NULL NULL 545 Using where
SELECT Name FROM t1
WHERE t1.Code IN (
SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
@ -605,7 +605,7 @@ select * from t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t3));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t3 index PRIMARY PRIMARY 4 NULL 10 Using index
2 MATERIALIZED t3 index PRIMARY PRIMARY 4 NULL 10 Using index
drop table t0, t1, t2, t3;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
@ -719,7 +719,7 @@ explain select count(a) from t2 where a in ( SELECT a FROM t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index a a 5 NULL 1000 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t3 index a a 5 NULL 30000 Using index
2 MATERIALIZED t3 index a a 5 NULL 30000 Using index
select count(a) from t2 where a in ( SELECT a FROM t3);
count(a)
1000
@ -878,7 +878,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t4 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t4 ALL NULL NULL NULL NULL 2
3 DERIVED t1 ALL NULL NULL NULL NULL 1
SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a
WHERE t3.b IN (SELECT b FROM t4);

28
mysql-test/r/subselect_sj2_jcl6.result
View File

@ -57,7 +57,7 @@ explain select * from t2 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3
1 PRIMARY t2 ref b b 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 Using where
select * from t2 where b in (select a from t1);
a b
1 1
@ -77,7 +77,7 @@ explain select * from t3 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL b NULL NULL NULL 20
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
select * from t3 where b in (select a from t1);
a b pk1 pk2 pk3
1 1 1 1 1
@ -103,7 +103,7 @@ explain select * from t3 where b in (select a from t0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 10
1 PRIMARY t3 ref b b 5 test.t0.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
2 MATERIALIZED t0 ALL NULL NULL NULL NULL 10 Using where
set @save_ecp= @@engine_condition_pushdown;
set engine_condition_pushdown=0;
select * from t3 where b in (select A.a+B.a from t0 A, t0 B where B.a<5);
@ -157,7 +157,7 @@ from t1 ot where a in (select a from t2 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 22
1 PRIMARY ot hash_ALL NULL #hash#$hj 5 test.it.a 32 Using where; Using join buffer (flat, BNLH join)
2 SUBQUERY it ALL NULL NULL NULL NULL 22 Using where
2 MATERIALIZED it ALL NULL NULL NULL NULL 22 Using where
select
a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z
from t1 ot where a in (select a from t2 it);
@ -190,7 +190,7 @@ from t2 ot where a in (select a from t1 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot ALL NULL NULL NULL NULL 22
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY it ALL NULL NULL NULL NULL 32
2 MATERIALIZED it ALL NULL NULL NULL NULL 32
select
a, mid(filler1, 1,10), length(filler1)=length(filler2)
from t2 ot where a in (select a from t1 it);
@ -225,7 +225,7 @@ from t1 ot where a in (select a from t2 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 22
1 PRIMARY ot hash_ALL NULL #hash#$hj 5 test.it.a 52 Using where; Using join buffer (flat, BNLH join)
2 SUBQUERY it ALL NULL NULL NULL NULL 22 Using where
2 MATERIALIZED it ALL NULL NULL NULL NULL 22 Using where
select
a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z
from t1 ot where a in (select a from t2 it);
@ -258,7 +258,7 @@ from t2 ot where a in (select a from t1 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot ALL NULL NULL NULL NULL 22
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY it ALL NULL NULL NULL NULL 52
2 MATERIALIZED it ALL NULL NULL NULL NULL 52
select
a, mid(filler1, 1,10), length(filler1)=length(filler2)
from t2 ot where a in (select a from t1 it);
@ -299,9 +299,9 @@ from t0 where a in
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 10
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 9 func 1 Using where
2 SUBQUERY t1 index a a 5 NULL 10 Using where; Using index
2 SUBQUERY t2 ref a a 5 test.t1.a 1 Using index
2 SUBQUERY t3 ref a a 5 test.t1.a 1 Using index
2 MATERIALIZED t1 index a a 5 NULL 10 Using where; Using index
2 MATERIALIZED t2 ref a a 5 test.t1.a 1 Using index
2 MATERIALIZED t3 ref a a 5 test.t1.a 1 Using index
drop table t0, t1,t2,t3;
CREATE TABLE t1 (
ID int(11) NOT NULL auto_increment,
@ -379,7 +379,7 @@ SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 31
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL CountryCode NULL NULL NULL 545 Using where
2 MATERIALIZED t2 ALL CountryCode NULL NULL NULL 545 Using where
SELECT Name FROM t1
WHERE t1.Code IN (
SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
@ -616,7 +616,7 @@ select * from t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t3));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
1 PRIMARY t2 hash_ALL NULL #hash#$hj 5 test.t1.a 3 Using where; Using join buffer (flat, BNLH join)
2 SUBQUERY t3 index PRIMARY PRIMARY 4 NULL 10 Using index
2 MATERIALIZED t3 index PRIMARY PRIMARY 4 NULL 10 Using index
drop table t0, t1, t2, t3;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
@ -730,7 +730,7 @@ explain select count(a) from t2 where a in ( SELECT a FROM t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index a a 5 NULL 1000 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t3 index a a 5 NULL 30000 Using index
2 MATERIALIZED t3 index a a 5 NULL 30000 Using index
select count(a) from t2 where a in ( SELECT a FROM t3);
count(a)
1000
@ -889,7 +889,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 hash_ALL NULL #hash#$hj 5 test.t3.a 1 Using where; Using join buffer (flat, BNLH join)
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join)
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t4 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t4 ALL NULL NULL NULL NULL 2
3 DERIVED t1 ALL NULL NULL NULL NULL 1
SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a
WHERE t3.b IN (SELECT b FROM t4);

28
mysql-test/r/subselect_sj2_mat.result
View File

@ -50,7 +50,7 @@ explain select * from t2 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3
1 PRIMARY t2 ref b b 5 test.t1.a 2
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 Using where
select * from t2 where b in (select a from t1);
a b
1 1
@ -70,7 +70,7 @@ explain select * from t3 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL b NULL NULL NULL 20
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
select * from t3 where b in (select a from t1);
a b pk1 pk2 pk3
1 1 1 1 1
@ -96,7 +96,7 @@ explain select * from t3 where b in (select a from t0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 10
1 PRIMARY t3 ref b b 5 test.t0.a 1
2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
2 MATERIALIZED t0 ALL NULL NULL NULL NULL 10 Using where
set @save_ecp= @@engine_condition_pushdown;
set engine_condition_pushdown=0;
select * from t3 where b in (select A.a+B.a from t0 A, t0 B where B.a<5);
@ -150,7 +150,7 @@ from t1 ot where a in (select a from t2 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 22
1 PRIMARY ot ALL NULL NULL NULL NULL 32 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it ALL NULL NULL NULL NULL 22
2 MATERIALIZED it ALL NULL NULL NULL NULL 22
select
a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z
from t1 ot where a in (select a from t2 it);
@ -183,7 +183,7 @@ from t2 ot where a in (select a from t1 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot ALL NULL NULL NULL NULL 22
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY it ALL NULL NULL NULL NULL 32
2 MATERIALIZED it ALL NULL NULL NULL NULL 32
select
a, mid(filler1, 1,10), length(filler1)=length(filler2)
from t2 ot where a in (select a from t1 it);
@ -218,7 +218,7 @@ from t1 ot where a in (select a from t2 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 22
1 PRIMARY ot ALL NULL NULL NULL NULL 52 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it ALL NULL NULL NULL NULL 22
2 MATERIALIZED it ALL NULL NULL NULL NULL 22
select
a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z
from t1 ot where a in (select a from t2 it);
@ -251,7 +251,7 @@ from t2 ot where a in (select a from t1 it);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot ALL NULL NULL NULL NULL 22
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY it ALL NULL NULL NULL NULL 52
2 MATERIALIZED it ALL NULL NULL NULL NULL 52
select
a, mid(filler1, 1,10), length(filler1)=length(filler2)
from t2 ot where a in (select a from t1 it);
@ -292,9 +292,9 @@ from t0 where a in
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 10
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 9 func 1 Using where
2 SUBQUERY t1 index a a 5 NULL 10 Using where; Using index
2 SUBQUERY t2 ref a a 5 test.t1.a 1 Using index
2 SUBQUERY t3 ref a a 5 test.t1.a 1 Using index
2 MATERIALIZED t1 index a a 5 NULL 10 Using where; Using index
2 MATERIALIZED t2 ref a a 5 test.t1.a 1 Using index
2 MATERIALIZED t3 ref a a 5 test.t1.a 1 Using index
drop table t0, t1,t2,t3;
CREATE TABLE t1 (
ID int(11) NOT NULL auto_increment,
@ -372,7 +372,7 @@ SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 31
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 SUBQUERY t2 ALL CountryCode NULL NULL NULL 545 Using where
2 MATERIALIZED t2 ALL CountryCode NULL NULL NULL 545 Using where
SELECT Name FROM t1
WHERE t1.Code IN (
SELECT t2.CountryCode FROM t2 WHERE Population > 5000000);
@ -607,7 +607,7 @@ select * from t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t3));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t3 index PRIMARY PRIMARY 4 NULL 10 Using index
2 MATERIALIZED t3 index PRIMARY PRIMARY 4 NULL 10 Using index
drop table t0, t1, t2, t3;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
@ -721,7 +721,7 @@ explain select count(a) from t2 where a in ( SELECT a FROM t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index a a 5 NULL 1000 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t3 index a a 5 NULL 30000 Using index
2 MATERIALIZED t3 index a a 5 NULL 30000 Using index
select count(a) from t2 where a in ( SELECT a FROM t3);
count(a)
1000
@ -880,7 +880,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t4 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t4 ALL NULL NULL NULL NULL 2
3 DERIVED t1 ALL NULL NULL NULL NULL 1
SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a
WHERE t3.b IN (SELECT b FROM t4);

30
mysql-test/r/subselect_sj_jcl6.result
View File

@ -90,7 +90,7 @@ id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY A ALL NULL NULL NULL NULL 3 100.00 Using where; Using join Buffer (flAt, BNL join)
1 PRIMARY B ALL NULL NULL NULL NULL 3 100.00 Using where; Using join Buffer (incrementAl, BNL join)
2 SUBQUERY t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
2 MATERIALIZED t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`A`.`A` AS `A`,`test`.`A`.`B` AS `B`,`test`.`B`.`A` AS `A`,`test`.`B`.`B` AS `B` from `test`.`t1` left join (`test`.`t2` `A` join `test`.`t2` `B`) on((<in_optimizer>(`test`.`B`.`A`,`test`.`B`.`A` in ( <mAteriAlize> (select `test`.`t10`.`pk` from `test`.`t10` ), <primAry_index_lookup>(`test`.`B`.`A` in <temporAry tABle> on distinct_key where ((`test`.`B`.`A` = `<suBquery2>`.`pk`))))) And (`test`.`A`.`A` = `test`.`t1`.`A`))) where 1
t2 should be wrapped into OJ-nest, so we have "t1 LJ (t2 J t10)"
@ -99,7 +99,7 @@ select * from t1 left join t2 on (t2.A= t1.A And t2.A in (select pk from t10));
id select_type tABle type possiBle_keys key key_len ref rows filtered ExtrA
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join Buffer (flAt, BNL join)
2 SUBQUERY t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
2 MATERIALIZED t10 index PRIMARY PRIMARY 4 NULL 10 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`A` AS `A`,`test`.`t1`.`B` AS `B`,`test`.`t2`.`A` AS `A`,`test`.`t2`.`B` AS `B` from `test`.`t1` left join `test`.`t2` on((<in_optimizer>(`test`.`t2`.`A`,`test`.`t2`.`A` in ( <mAteriAlize> (select `test`.`t10`.`pk` from `test`.`t10` ), <primAry_index_lookup>(`test`.`t2`.`A` in <temporAry tABle> on distinct_key where ((`test`.`t2`.`A` = `<suBquery2>`.`pk`))))) And (`test`.`t2`.`A` = `test`.`t1`.`A`))) where 1
we shouldn't flatten if we're going to get a join of > MAX_TABLES.
@ -737,8 +737,8 @@ FROM it1 LEFT JOIN it2 ON it2.datetime_key);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 11
1 PRIMARY ot1 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY it1 index NULL int_key 4 NULL 2 Using index
2 SUBQUERY it2 ALL int_key,datetime_key NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED it1 index NULL int_key 4 NULL 2 Using index
2 MATERIALIZED it2 ALL int_key,datetime_key NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join)
DROP TABLE ot1, it1, it2;
# End of BUG#38075
#
@ -811,7 +811,7 @@ EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 13 func,func 1 100.00
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0);
@ -980,7 +980,7 @@ WHERE `varchar_nokey` < 'n' XOR `pk` ) ;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 func,func 1 100.00
2 SUBQUERY t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where
2 MATERIALIZED t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`))
SELECT varchar_nokey
@ -1063,8 +1063,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 14 func 1
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 14 func 1
3 SUBQUERY t3 ALL NULL NULL NULL NULL 5 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
SELECT *
FROM t1
WHERE t1.val IN (SELECT t2.val FROM t2
@ -1286,8 +1286,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
1 PRIMARY B ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY C ALL NULL NULL NULL NULL 3
3 SUBQUERY D ALL NULL NULL NULL NULL 3
2 MATERIALIZED C ALL NULL NULL NULL NULL 3
3 MATERIALIZED D ALL NULL NULL NULL NULL 3
drop table t1, t2;
#
# BUG#784441: Abort on semijoin with a view as the inner table
@ -1302,7 +1302,7 @@ SELECT * FROM t1 INNER JOIN t2 ON t2.a != 0 AND t2.a IN (SELECT * FROM v1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY <derived3> system NULL NULL NULL NULL 1
2 MATERIALIZED <derived3> system NULL NULL NULL NULL 1
3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
SELECT * FROM t1 INNER JOIN t2 ON t2.a != 0 AND t2.a IN (SELECT * FROM v1);
a a
@ -1397,8 +1397,8 @@ explain select * from t3 where t3.b in (select t2.b from t1 left join t2 on t1.a
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t3 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
select * from t3 where t3.b in (select t2.b from t1 left join t2 on t1.a=t2.a);
b
drop table t1, t2, t3;
@ -2001,8 +2001,8 @@ SELECT * FROM t1 WHERE (a) IN (SELECT a FROM t2 JOIN t3 ON b = a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t3 ALL NULL NULL NULL NULL 13 Using where
2 SUBQUERY t2 ref b b 4 test.t3.a 1 Using index
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 13 Using where
2 MATERIALIZED t2 ref b b 4 test.t3.a 1 Using index
SELECT * FROM t1 WHERE (a) IN (SELECT a FROM t2 JOIN t3 ON b = a);
a
19

110
mysql-test/r/subselect_sj_mat.result
View File

@ -46,7 +46,7 @@ select * from t1 where a1 in (select b1 from t2 where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 9 func 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b1` > '0'))
select * from t1 where a1 in (select b1 from t2 where b1 > '0');
@ -58,7 +58,7 @@ select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 9 test.t1.a1 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t2`.`b1` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`) join `test`.`t1` where (`<subquery2>`.`b1` = `test`.`t1`.`a1`)
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
@ -70,7 +70,7 @@ select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group b
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`,`test`.`t2`.`b2`) join `test`.`t1` where ((`<subquery2>`.`b2` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
@ -82,7 +82,7 @@ select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' gr
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1`) join `test`.`t1` where ((`<subquery2>`.`min(b2)` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
@ -105,7 +105,7 @@ select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery2> ALL distinct_key # NULL # 3 100.00 #
1 PRIMARY t1i ref it1i1,it1i3 # 9 # 1 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 # 9 # 3 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # 9 # 3 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where (`test`.`t1i`.`a1` = `<subquery2>`.`b1`)
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
@ -128,7 +128,7 @@ select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index it1i1,it1i2,it1i3 # # # 3 100.00 #
1 PRIMARY <subquery2> eq_ref distinct_key # # # 1 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # # # 3 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2`) join `test`.`t1i` where ((`<subquery2>`.`b2` = `test`.`t1i`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1i`.`a1`))
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
@ -140,7 +140,7 @@ select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0'
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index it1i1,it1i2,it1i3 # # # 3 100.00 #
1 PRIMARY <subquery2> eq_ref distinct_key # # # 1 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # # # 3 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where ((`<subquery2>`.`min(b2)` = `test`.`t1i`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1i`.`a1`))
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
@ -152,7 +152,7 @@ select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1 100.00
2 SUBQUERY t2i range NULL it2i3 9 NULL 3 100.00 Using index for group-by
2 MATERIALIZED t2i range NULL it2i3 9 NULL 3 100.00 Using index for group-by
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1`) join `test`.`t1` where ((`<subquery2>`.`max(b2)` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
@ -164,12 +164,12 @@ execute st1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1
2 SUBQUERY t2i range NULL it2i3 9 NULL 3 Using index for group-by
2 MATERIALIZED t2i range NULL it2i3 9 NULL 3 Using index for group-by
execute st1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1
2 SUBQUERY t2i range NULL it2i3 9 NULL 3 Using index for group-by
2 MATERIALIZED t2i range NULL it2i3 9 NULL 3 Using index for group-by
prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
execute st2;
a1 a2
@ -184,7 +184,7 @@ select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' g
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1 100.00
2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
2 MATERIALIZED t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1` where ((`<subquery2>`.`min(b2)` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
@ -232,7 +232,7 @@ select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1.a1,test.t1.a2 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2`) join `test`.`t1` where ((`<subquery2>`.`b2` = `test`.`t1`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1`.`a1`))
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
@ -244,7 +244,7 @@ select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index it1i1,it1i2,it1i3 it1i3 18 NULL 3 100.00 Using where; Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 test.t1i.a1,test.t1i.a2 1 100.00
2 SUBQUERY t2i index NULL it2i3 18 NULL 5 100.00 Using index
2 MATERIALIZED t2i index NULL it2i3 18 NULL 5 100.00 Using index
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2`) join `test`.`t1i` where ((`<subquery2>`.`b2` = `test`.`t1i`.`a2`) and (`<subquery2>`.`b1` = `test`.`t1i`.`a1`))
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
@ -299,9 +299,9 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 18 func,func 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 func,func 1 100.00
3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 SUBQUERY t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 MATERIALIZED t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3`) where ((`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t2i`.`b1` = `test`.`t3`.`c1`) and (`test`.`t2`.`b1` > '0') and (`test`.`t3`.`c2` > '0'))
select * from t1
@ -341,11 +341,11 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 18 func,func 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 18 func,func 1 100.00
5 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 SUBQUERY t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3`) where ((`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t2i`.`b1` = `test`.`t3`.`c1`) and (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery3>`.`c2`)))))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where ((`test`.`t2`.`b2` = `<subquery4>`.`c2`))))))) and (`test`.`t3`.`c2` > '0'))
select * from t1
@ -367,9 +367,9 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 18 func,func 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary; End temporary; Using join buffer (flat, BNL join)
5 SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where
5 SUBQUERY t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
4 SUBQUERY t3b ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t3c ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
@ -401,9 +401,9 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL # # # 4 100.00 #
1 PRIMARY t1 ALL NULL # # # 3 100.00 #
1 PRIMARY t2i ref it2i1,it2i2,it2i3 # # # 2 100.00 #
2 SUBQUERY t2 ALL NULL # # # 5 100.00 #
4 SUBQUERY t3 ALL NULL # # # 4 100.00 #
3 SUBQUERY t3 ALL NULL # # # 4 100.00 #
2 MATERIALIZED t2 ALL NULL # # # 5 100.00 #
4 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
3 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
7 UNION t2i index it2i1,it2i2,it2i3 # # # 5 40.00 #
7 UNION t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
7 UNION t3i ref it3i1,it3i2,it3i3 # # # 1 100.00 #
@ -434,8 +434,8 @@ where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 18 func,func 1 100.00
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 SUBQUERY t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
@ -458,8 +458,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 18 func,func 1 100.00
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 SUBQUERY t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t2i index it2i1,it2i2,it2i3 it2i3 18 NULL 5 80.00 Using where; Using index; Using join buffer (flat, BNL join)
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
@ -505,7 +505,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2i ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 2 100.00 Using index; Start temporary
1 PRIMARY t3c ALL NULL NULL NULL NULL 4 100.00 Using where; End temporary; Using join buffer (flat, BNL join)
4 SUBQUERY t3b ALL NULL NULL NULL NULL 4 100.00 Using where
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
@ -643,7 +643,7 @@ where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 20 func 1 100.00 Using where
2 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
2 MATERIALIZED t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` semi join (`test`.`t2_16`) where ((`test`.`t2_16`.`b1` > '0') and (`test`.`t1_16`.`a1` = substr(`test`.`t2_16`.`b1`,1,16)))
select left(a1,7), left(a2,7)
@ -673,7 +673,7 @@ where a1 in (select group_concat(b1) from t2_16 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_16.a1 1 100.00 Using where
2 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2`) join `test`.`t1_16` where (`test`.`t1_16`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -758,7 +758,7 @@ where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 517 func 1 100.00 Using where
2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` semi join (`test`.`t2_512`) where ((`test`.`t2_512`.`b1` > '0') and (`test`.`t1_512`.`a1` = substr(`test`.`t2_512`.`b1`,1,512)))
select left(a1,7), left(a2,7)
@ -773,7 +773,7 @@ where a1 in (select group_concat(b1) from t2_512 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_512.a1 1 100.00 Using where
2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2`) join `test`.`t1_512` where (`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -787,7 +787,7 @@ where a1 in (select group_concat(b1) from t2_512 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_512.a1 1 100.00 Using where
2 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2`) join `test`.`t1_512` where (`test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -868,7 +868,7 @@ where a1 in (select group_concat(b1) from t2_1024 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_1024.a1 1 100.00 Using where
2 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2`) join `test`.`t1_1024` where (`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -882,7 +882,7 @@ where a1 in (select group_concat(b1) from t2_1024 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_1024.a1 1 100.00 Using where
2 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2`) join `test`.`t1_1024` where (`test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -963,7 +963,7 @@ where a1 in (select group_concat(b1) from t2_1025 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_1025.a1 1 100.00 Using where
2 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2`) join `test`.`t1_1025` where (`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -977,7 +977,7 @@ where a1 in (select group_concat(b1) from t2_1025 group by b2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 261 test.t1_1025.a1 1 100.00 Using where
2 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
2 MATERIALIZED t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
Warnings:
Note 1003 select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from <materialize> (select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2`) join `test`.`t1_1025` where (`test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`)
select left(a1,7), left(a2,7)
@ -999,7 +999,7 @@ where (a1, a2) in (select b1, b2 from t2bit);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1bit ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 10 func,func 1 100.00
2 SUBQUERY t2bit ALL NULL NULL NULL NULL 3 100.00
2 MATERIALIZED t2bit ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` semi join (`test`.`t2bit`) where 1
select bin(a1), bin(a2)
@ -1071,7 +1071,7 @@ select a from t1 where a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 6 100.00
1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and (`test`.`t2`.`d` >= 20))
select a from t1 where a in (select c from t2 where d >= 20);
@ -1086,7 +1086,7 @@ select a from t1 where a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 6 100.00
1 PRIMARY t1 ref it1a it1a 4 test.t2.c 2 100.00 Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and (`test`.`t2`.`d` >= 20))
select a from t1 where a in (select c from t2 where d >= 20);
@ -1101,7 +1101,7 @@ select a from t1 where a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index it1a it1a 4 NULL 7 100.00 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` >= 20))
select a from t1 where a in (select c from t2 where d >= 20);
@ -1114,7 +1114,7 @@ explain extended
select a from t1 group by a having a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 group by a having a in (select c from t2 where d >= 20);
@ -1126,7 +1126,7 @@ explain extended
select a from t1 group by a having a in (select c from t2 where d >= 20);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where ((`test`.`t1`.`a` = `<subquery2>`.`c`))))))
select a from t1 group by a having a in (select c from t2 where d >= 20);
@ -1185,7 +1185,7 @@ explain select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY <subquery2> const distinct_key distinct_key 5 const 1
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
min(a1)
NULL
@ -1234,7 +1234,7 @@ explain select a,b from t1 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1 Using where
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
select a,b from t1 where b in (select a from t1);
a b
prepare st1 from "select a,b from t1 where b in (select a from t1)";
@ -1273,7 +1273,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 5 const 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t4 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using temporary
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 2 Using temporary
DROP TABLE t1,t2,t3,t4;
CREATE TABLE t1 (
pk INTEGER AUTO_INCREMENT,
@ -1380,7 +1380,7 @@ SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1;
@ -1410,7 +1410,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 const 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t1 system NULL NULL NULL NULL 1
2 MATERIALIZED t1 system NULL NULL NULL NULL 1
SELECT * FROM t1 JOIN t2 USING (f1)
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
f1 pk pk
@ -1484,7 +1484,7 @@ EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
COUNT(*)
2
@ -1508,7 +1508,7 @@ EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
pk
2
@ -1549,7 +1549,7 @@ insert into t1 values (0),(1),(2);
explain select a, a in (select a from t1) from t0;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 3
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
select a, a in (select a from t1) from t0;
a a in (select a from t1)
0 1

28
mysql-test/r/subselect_sj_nonmerged.result
View File

@ -10,7 +10,7 @@ explain select * from t0 where a in (select max(a) from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 1
1 PRIMARY t0 ALL NULL NULL NULL NULL 10 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t1 ALL NULL NULL NULL NULL 10
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 10
select * from t0 where a in (select max(a) from t1);
a
9
@ -42,23 +42,23 @@ explain select * from t3 where a in (select max(t2.a) from t1, t2 group by t2.b)
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 5 Using where
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 8 <subquery2>.max(t2.a) 1 Using where; Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 Using temporary
2 SUBQUERY t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
# Compare to this which really will have 50 record combinations:
explain select * from t3 where a in (select max(t2.a) from t1, t2 group by t2.b, t1.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 50 Using where
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 8 <subquery2>.max(t2.a) 1 Using where; Using index
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 Using temporary
2 SUBQUERY t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
# Outer joins also work:
explain select * from t3
where a in (select max(t2.a) from t1 left join t2 on t1.a=t2.a group by t2.b, t1.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 50 Using where
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 8 <subquery2>.max(t2.a) 1 Using where; Using index
2 SUBQUERY t1 ALL NULL NULL NULL NULL 10 Using temporary
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 Using where
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using temporary
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using where
create table t4 (a int, b int, filler char(20), unique key(a,b));
insert into t4 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t0 A, t0 B;
explain select * from t0, t4 where
@ -67,8 +67,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 10
1 PRIMARY t4 ALL a NULL NULL NULL 100 Using where; Using join buffer (flat, BNL join)
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 test.t4.a 1
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 Using temporary
2 SUBQUERY t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
insert into t4 select 100 + (B.a *100 + A.a), 100 + (B.a*100 + A.a), 'filler' from t4 A, t0 B;
explain select * from t4 where
t4.a in (select max(t2.a) from t1, t2 group by t2.b) and
@ -77,10 +77,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 5 Using where
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join)
1 PRIMARY t4 ref a a 10 <subquery2>.max(t2.a),<subquery3>.max(t2.a) 12
3 SUBQUERY t2 ALL NULL NULL NULL NULL 5 Using temporary
3 SUBQUERY t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 Using temporary
2 SUBQUERY t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using temporary
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
drop table t1,t2,t3,t4;
drop table t0;
#
@ -114,6 +114,6 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 1 Using where
1 PRIMARY X ref a a 5 <subquery2>.max(a) 1 Using index
1 PRIMARY Y ALL NULL NULL NULL NULL 10 Using where; Using join buffer (flat, BNL join)
2 SUBQUERY t0 ALL NULL NULL NULL NULL 10
2 MATERIALIZED t0 ALL NULL NULL NULL NULL 10
drop table t0, t1;
set optimizer_switch=@save_optimizer_switch;

6
mysql-test/suite/pbxt/r/subselect.result
View File

@ -2839,7 +2839,7 @@ explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FR
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 10 func,func 1 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 9 100.00 Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 9 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`flag` = 'N'))
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
@ -3432,7 +3432,7 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
ALTER TABLE t1 ADD INDEX(a);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
@ -3444,7 +3444,7 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL a NULL NULL NULL 9 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 23 test.t1.a,test.t1.b 1
2 SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 9 Using temporary
DROP TABLE t1;
create table t1( f1 int,f2 int);
insert into t1 values (1,1),(2,2);

64
sql/sql_lex.cc
View File

@ -3528,19 +3528,57 @@ void st_select_lex::set_explain_type()
/* drop UNCACHEABLE_EXPLAIN, because it is for internal usage only */
uint8 is_uncacheable= (uncacheable & ~UNCACHEABLE_EXPLAIN);
type= ((&master_unit()->thd->lex->select_lex == this) ?
(is_primary ? "PRIMARY" : "SIMPLE"):
((this == first) ?
((linkage == DERIVED_TABLE_TYPE) ?
"DERIVED" :
((is_uncacheable & UNCACHEABLE_DEPENDENT) ?
"DEPENDENT SUBQUERY" :
(is_uncacheable ? "UNCACHEABLE SUBQUERY" :
"SUBQUERY"))) :
((is_uncacheable & UNCACHEABLE_DEPENDENT) ?
"DEPENDENT UNION":
is_uncacheable ? "UNCACHEABLE UNION":
"UNION")));
bool using_materialization= FALSE;
Item_subselect *parent_item;
if ((parent_item= master_unit()->item) &&
parent_item->substype() == Item_subselect::IN_SUBS)
{
Item_in_subselect *in_subs= (Item_in_subselect*)parent_item;
/*
Surprisingly, in_subs->is_set_strategy() can return FALSE here,
even for the last invocation of this function for the select.
*/
if (in_subs->test_strategy(SUBS_MATERIALIZATION))
using_materialization= TRUE;
}
if (&master_unit()->thd->lex->select_lex == this)
{
type= is_primary ? "PRIMARY" : "SIMPLE";
}
else
{
if (this == first)
{
/* If we're a direct child of a UNION, we're the first sibling there */
if (linkage == DERIVED_TABLE_TYPE)
type= "DERIVED";
else if (using_materialization)
type= "MATERIALIZED";
else
{
if (is_uncacheable & UNCACHEABLE_DEPENDENT)
type= "DEPENDENT SUBQUERY";
else
{
type= is_uncacheable? "UNCACHEABLE SUBQUERY" :
"SUBQUERY";
}
}
}
else
{
/* This a non-first sibling in UNION */
if (is_uncacheable & UNCACHEABLE_DEPENDENT)
type= "DEPENDENT UNION";
else if (using_materialization)
type= "MATERIALIZED UNION";
else
{
type= is_uncacheable ? "UNCACHEABLE UNION": "UNION";
}
}
}
options|= SELECT_DESCRIBE;
}

2
sql/sql_select.cc
View File

@ -20642,7 +20642,7 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
/* id */
item_list.push_back(new Item_uint((uint32)select_id));
/* select_type */
const char* stype= printing_materialize_nest? "SUBQUERY" :
const char* stype= printing_materialize_nest? "MATERIALIZED" :
join->select_lex->type;
item_list.push_back(new Item_string(stype, strlen(stype), cs));

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