mariadb/mysql-test/t/myisam_icp.test

#
# ICP/MyISAM tests (Index Condition Pushdown)
#

set @myisam_icp_tmp=@@optimizer_switch;
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';

--source include/icp_tests.inc

--disable_warnings
drop table if exists t0, t1, t1i, t1m;
--enable_warnings

#
# BUG#711565 Index Condition Pushdown can make a thread hold MyISAM locks as well as be unKILLable for long time
#   This is not a ready mysqltest testcase but rather a set of queries that
#   allow to check the bug[fix] manually. Making this testcase automatic is
#   difficult because
#    - big tables are involved
#    - it's difficult to have automatic checks of whether the query could be
#       KILLed that would reliably work on fast/slow buildslaves, etc.

--disable_parsing
 
  create table t0 (a int);
  insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

  create table t1 (
    kp1 int, kp2 int, 
    filler char(100),
    col int,
    key(kp1, kp2)
  );

  set myisam_sort_buffer_size=32*1000*1000;
  insert into t1 
  select 
    1000 + A.a + 10*B.a + 100*C.a + 1000*D.a + 10000 * F.a,
    1,
    'filler-data filler-data filler-data filler-data filler-data',
    1
  from 
    t0 A, t0 B, t0 C, t0 D, t0 E, t0 F, t0 G
  ;

  insert into t1 values (990, 100, 'a record to test index_next checks',100); 

  update t1 set kp2=10 where kp1 between 20000+100 and 28000;

  update t1 set kp1=20000 where kp1 between 20000 and 28000;

  insert into t1 values (20000, 100, 'last-20K-record',1);

  create table t1i like t1;
  alter table t1i engine=innodb;
  insert into t1i select * from t1;

  create table t1m like t1; 
  alter table t1m engine=maria;
  insert into t1m select * from t1;

#
# XtraDB has one check for all kinds of ranges.
#
  explain 
  select * from t1i
  where 
    kp1 < 8000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 10;


#
# MyISAM, check range access + mi_rnext():
#   (will return HA_ERR_END_OF_FILE)
  explain 
  select * from t1 
  where 
    kp1 < 10000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 10;


#
# MyISAM, check range access + mi_rkey():
#   (will return HA_ERR_END_OF_FILE)
  explain 
  select * from t1 
  where 
    kp1 >= 999 and kp1 < 10000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 10;



#
# MyISAM, check mi_rnext_same:
#

  explain 
  select * from t1 
  where 
    kp1 = 20000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 < 10;


# 
# MyISAM, check mi_rprev:
#

  explain 
  select * from t1 
  where 
    kp1 = 20000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 20
  order by kp1, kp2 desc;



#
# Maria, check range access + maria_rkey():
#
  explain 
  select * from t1m 
  where 
    kp1 >= 999 and kp1 < 10000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 10;



#
# Maria, check range access + maria_rnext():
#
  explain 
  select * from t1m
  where 
    kp1 < 10000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 10;


#
# Maria, check maria_rnext_same:
#

  explain 
  select * from t1m
  where 
    kp1 = 20000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 100;

# 
# Maria, check maria_rprev:
#

  explain 
  select * from t1m
  where 
    kp1 = 20000 and 
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    concat(repeat('foo-bar-', 100000), kp2) like '%bar-1%' and
    kp2 +1 > 20
  order by kp1, kp2 desc;

drop table t0, t1, t1i, t1m;

--enable_parsing

--echo #
--echo # BUG#826935 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed
--echo #
CREATE TABLE t1 ( a int, b varchar(1024), c int, KEY (c), KEY (c,a)) ;
INSERT INTO t1 VALUES
  (NULL,'x','-678428672'),
  (NULL,'ok',NULL),
  (796262400,'byluovkgwoukfxedyeffsedajyqkyhpaqqpozn', NULL),
  (7,'STQUF',146014208),
  (955711488,'WWVOR','-1515388928');
SELECT b FROM t1 WHERE a != 1 AND c IS NULL ORDER BY 1;
DROP TABLE t1;

--echo #
--echo # Bug#870046: ICP for a GROUP BY query
--echo #

CREATE TABLE t1 (a int, b varchar(1), c varchar(1), INDEX idx(b));
INSERT INTO t1 VALUES (2,'x','x'), (5,'x','y');

SET SESSION optimizer_switch='index_condition_pushdown=off';
EXPLAIN
SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
SET SESSION optimizer_switch='index_condition_pushdown=on';
EXPLAIN
SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;

DROP TABLE t1;

--echo #
--echo # BUG#887026: Wrong result with ICP, outer join, subquery in maria-5.3-icp
--echo #

CREATE TABLE t1 (c varchar(1));
INSERT INTO t1 VALUES ('c'), ('c');

CREATE TABLE t2 (c varchar(1), b int);
INSERT INTO t2 VALUES ('d', NULL),('d', NULL);

CREATE TABLE t3 (c varchar(1));
INSERT INTO t3 VALUES ('c');
INSERT INTO t3 VALUES ('c');

CREATE TABLE t4 ( b int, c varchar(1), KEY (b));
INSERT INTO t4 VALUES (7,'c');
INSERT INTO t4 VALUES (7,'c');

SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='outer_join_with_cache=off';

--echo # Must be t1,t2,t3,t4, with t4 having Full-scan-on-NULL but not Using index condition
explain 
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);
 
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);

SET optimizer_switch=@save_optimizer_switch;

DROP TABLE t1,t2,t3,t4;

set optimizer_switch=@myisam_icp_tmp;