mariadb

Commit Graph

Author	SHA1	Message	Date
Michael Widenius	52090a4434	Code cleanup to get fewer reallocs() during execution. - Changed TABLE->alias to String to get fewer reallocs when alias are used. - Preallocate some buffers Changed some String->c_ptr() -> String->ptr() when \0 is not needed. Fixed wrong usage of String->ptr() when we need a \0 terminated string. Use my_strtod() instead of my_atof() to avoid having to add \0 to string. c_ptr() -> c_ptr_safe() to avoid warnings from valgrind. zr sql/event_db_repository.cc: Update usage of TABLE->alias sql/event_scheduler.cc: c_ptr() -> c_ptr_safe() sql/events.cc: c_ptr() -> ptr() as \0 was not needed sql/field.cc: Update usage of TABLE->alias sql/field.h: Update usage of TABLE->alias sql/ha_partition.cc: Update usage of TABLE->alias sql/handler.cc: Update usage of TABLE->alias Fixed wrong usage of str.ptr() sql/item.cc: Fixed error where code wrongly assumed string was \0 terminated. sql/item_func.cc: c_ptr() -> c_ptr_safe() Update usage of TABLE->alias sql/item_sum.h: Use my_strtod() instead of my_atof() to avoid having to add \0 to string sql/lock.cc: Update usage of TABLE->alias sql/log.cc: c_ptr() -> ptr() as \0 was not needed sql/log_event.cc: c_ptr_quick() -> ptr() as \0 was not needed sql/opt_range.cc: ptr() -> c_ptr() as \0 is needed sql/opt_subselect.cc: Update usage of TABLE->alias sql/opt_table_elimination.cc: Update usage of TABLE->alias sql/set_var.cc: ptr() -> c_ptr() as \0 is needed c_ptr() -> c_ptr_safe() sql/sp.cc: c_ptr() -> ptr() as \0 was not needed sql/sp_rcontext.cc: Update usage of TABLE->alias sql/sql_base.cc: Preallocate buffers Update usage of TABLE->alias sql/sql_class.cc: Fix arguments to sprintf() to work even if string is not \0 terminated sql/sql_insert.cc: Update usage of TABLE->alias c_ptr() -> ptr() as \0 was not needed sql/sql_load.cc: Preallocate buffers Trivial optimizations sql/sql_parse.cc: Trivial optimization sql/sql_plugin.cc: c_ptr() -> ptr() as \0 was not needed sql/sql_select.cc: Update usage of TABLE->alias sql/sql_show.cc: Update usage of TABLE->alias sql/sql_string.h: Added move() function to move allocated memory from one object to another. sql/sql_table.cc: Update usage of TABLE->alias c_ptr() -> c_ptr_safe() sql/sql_test.cc: ptr() -> c_ptr_safe() sql/sql_trigger.cc: Update usage of TABLE->alias c_ptr() -> c_ptr_safe() sql/sql_update.cc: Update usage of TABLE->alias sql/sql_view.cc: ptr() -> c_ptr_safe() sql/sql_yacc.yy: ptr() -> c_ptr() sql/table.cc: Update usage of TABLE->alias sql/table.h: Changed TABLE->alias to String to get fewer reallocs when alias are used. storage/federatedx/ha_federatedx.cc: Use c_ptr_safe() to ensure strings are \0 terminated. storage/maria/ha_maria.cc: Update usage of TABLE->alias storage/myisam/ha_myisam.cc: Update usage of TABLE->alias storage/xtradb/row/row0sel.c: Ensure that null bits in record are properly reset. (Old code didn't work as row_search_for_mysql() can be called twice while reading fields from one row.	15 years ago
Igor Babaev	6b67bafc74	Fixed LP bug #668644 . The pushdown condition for the sorted table in a query can be complemented by the conditions from HAVING. This transformation is done in JOIN::exec pretty late after the original pushdown condition have been saved in the field pre_idx_push_select_cond for the sorted table. So this field must be updated after the inclusion of the condition from HAVING.	15 years ago
Michael Widenius	7b047a31a0	Make SQLString reallocation addaptive Avoid doing reallocs Prealloc some strings / provide extension allocation size to some strings This gave a 25 % speedup in some mysql-test-run tests. mysys/safemalloc.c: More DBUG_PRINT sql/net_serv.cc: Make all mallocs() look the similar. (just-for-safety fix) sql/protocol.cc: Ensure that communication packet buffer is allocated. (It's freed by stored precedures and some DLL statements) sql/sp.cc: Fixed valgrind warning sql/sql_select.cc: Set extent allocation for buffer that has a lot of append() calls. sql/sql_show.cc: Fixed wrong usage of string buffer. Old code worked in test suite 'just-by-chance' sql/sql_string.cc: Call realloc_with_extra_if_needed() in append() functions. sql/sql_string.h: Added 'extra_alloc' member, to specify chunck size for realloc(). extra_alloc is addaptive to catch cases where preallocation of buffers is not done properly. Simplified free() to allow compiler to optimize things better (and to keep things consistent). Fixed shrink() to take into account the extra memory added to the Alloced_length in realloc(). This saves us a realloc() per query. sql/sql_test.cc: Set extent allocation for buffer that has a lot of append() calls. sql/table.cc: Set extent allocation for buffer that has a lot of append() calls.	15 years ago
Sergey Petrunya	5d1c9ce470	LPBUG#602574: RQG: sql_select.cc:5385: bool greedy_search... : Assertion `join->best_read - Make optimize_wo_join_buffering() handle cases where position->records_read=0 (this happens for outer joins that have constant tables inside them). The number of 0 is not correct (should be 1 because outer join will produce at least a NULL-complemented record) but for now we just make it work with incorrect number.	15 years ago
unknown	3b11e4f834	Fixed LP bug #609121 Post-review fix - avoid re-evaluation of the having clause when it evaluates to true.	15 years ago
Sergei Golubchik	60c15066db	better fix for MySQL bugs BUG#26447 prefer a clustered key for an index scan, as secondary index is always slower ... which was fixed to cause BUG#35850 queries take 50% longer ... and was reverted and BUG#39653 prefer a secondary index for an index scan, as clustered key is always slower ... which was fixed to cause BUG#55656 mysqldump takes six days instead of half an hour ... and was amended with a special case workaround sql/opt_range.cc: move get_index_only_read_time() into the handler class sql/sql_select.cc: use cost not an index length when choosing a cheaper index	15 years ago
Sergey Petrunya	6765cc3017	# No BUG#, a case brought from 5.2's innodb_mysql_lock.test - Fix a crash in nested semi-join subquery processing	15 years ago
Sergey Petrunya	f75fd03ea9	MariaDB 5.2 -> 5.2 post-merge fixes: - When building multiple-equalities for HAVING, don't set JOIN::cond_equal, set join_having_equal instead. Setting JOIN::cond_equal based on HAVING makes equality propagation data self-inconsistent	15 years ago
Igor Babaev	f0c6576b85	Reverted the MySQL fix for bug 51242 that was rejected once for mariadb-5.1.48 and mistakingly pulled in back for maria-5.1.50.	15 years ago
Sergey Petrunya	508e75c259	Merge MariaDB 5.2 -> MariaDB 5.3 - post-merge fixes	15 years ago
Sergey Petrunya	51294f5948	Remove garbage comments	15 years ago
Igor Babaev	716e84164a	Fixed bug #57024 . The condition over the outer tables now are extracted from the on condition of any outer join. This condition is saved in a special field of the JOIN_TAB structure for the first inner table of the outer join. The condition is checked before the first inner table is accessed. If it turns out to be false the table is not accessed at all and a null complemented row is generated immediately.	15 years ago
Michael Widenius	5ce4825b63	Fix usage of mysqld option --new, --old, --safe and --skip_new to not disable things that are proven stable or enable things that are not usefull. sql/field.cc: Remove feature of 'new_mode' that was never implemtented in a newer MySQL version. sql/item_cmpfunc.cc: Boyer more is stable; Don't have to be protected by --skip-new anymore sql/mysqld.cc: Don't disable some proven stable functions with --skip-new sql/records.cc: Don't disable record caching with --safe-mode anymore sql/sql_delete.cc: Do fast truncate even if --skip-new or --safe is used sql/sql_parse.cc: Use always mysql_optimizer() for optimizer (instead of mysql_recreate_table() in case of --safe or --skip-new) sql/sql_select.cc: Don't disable 'only_eq_ref_tables' if --safe is used. sql/sql_yacc.yy: Removed not meaningfull test of --old	15 years ago
Sergei Golubchik	e246077bcf	rename maria to aria	15 years ago
Igor Babaev	577b7345c7	Fixed bug #49600 . The problem could be demonstrated with an outer join of two single-row tables where the values of the join attributes were null. Any query with such a join could return a wrong result set if the where condition of the query was not empty. For queries with empty where conditions the result sets were correct. This was the consequence of two bugs in the code: - Item_equal objects for on conditions of outer joins were not built if the processed query had no where condition - the check for null values in the code that evaluated constant Item_equal objects was incorrect. Fixed both above problems. Added a test case for the bug and adjusted results for some other test cases.	15 years ago
Igor Babaev	b3cd40e0d2	Fixed bug #49322 . When not-exists optimization was applied to a table that happened to be an inner table of two outer joins, one embedded into another, then setting the match flag for the embedding outer join on could be skipped. This caused generation of extra null complemented rows. Made sure that the match flags are set correctly in all cases when not-exists optimization is used.	15 years ago
unknown	d6a9b52269	Fixed LP BUG#615760: Check on double cache assignment added into the transformation methods. Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/compare.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/group_by.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect3.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect3_jcl6.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect4.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect_cache.result: Added test suite for LP BUG#615760 mysql-test/r/subselect_mat.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect_no_mat.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect_no_opts.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect_no_semijoin.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect_sj.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/r/subselect_sj_jcl6.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/suite/pbxt/r/subselect.result: Cache parameters print added in EXPLAIN EXTENDED output. mysql-test/t/subselect_cache.test: Cache parameters print added in EXPLAIN EXTENDED output. sql/item.cc: Item::set_expr_cache result fixed according to its description. Cache parameters print added in EXPLAIN EXTENDED output. sql/item.h: Cache parameters print added in EXPLAIN EXTENDED output. sql/item_cmpfunc.cc: Check on double cache assignment added into the transformation methods. sql/item_cmpfunc.h: Check on double cache assignment added into the transformation methods. sql/item_subselect.cc: Check on double cache assignment added into the transformation methods. sql/item_subselect.h: Check on double cache assignment added into the transformation methods. sql/sql_expression_cache.cc: Cache parameters print added. sql/sql_expression_cache.h: Cache parameters print added. sql/sql_select.cc: Removed unused method (now it is impossible to make double transformation with the cache). sql/sql_select.h: Removed unused method.	15 years ago
Michael Widenius	a4fff491eb	Fix that one can run mysql_upgrade with long table names Fall back to use ALTER TABLE for engines that doesn't support REPAIR when doing repair for upgrade. Nicer output from mysql_upgrade and mysql_check Updated all arrays that used NAME_LEN to use SAFE_NAME_LEN to ensure that we don't break things accidently as names can now have a #mysql50# prefix. client/mysql_upgrade.c: If we are using verbose, also run mysqlcheck in verbose mode. client/mysqlcheck.c: Add more information if running in verbose mode Print 'Needs upgrade' instead of complex error if table needs to be upgraded Don't write connect information if verbose is not 2 or above mysql-test/r/drop.result: Updated test and results as we now support full table names mysql-test/r/grant.result: Now you get a correct error message if using #mysql with paths mysql-test/r/show_check.result: Update results as table names can temporarly be bigger than NAME_LEN (during upgrade) mysql-test/r/upgrade.result: Test upgrade for long table names. mysql-test/suite/funcs_1/r/is_tables_is.result: Updated old test result (had note been updated in a while) mysql-test/t/drop.test: Updated test and results as we now support full table names mysql-test/t/grant.test: Now you get a correct error message if using #mysql with paths mysql-test/t/upgrade.test: Test upgrade for long table names. sql/ha_partition.cc: NAME_LEN -> SAFE_NAME_LEN sql/item.cc: NAME_LEN -> SAFE_NAME_LEN sql/log_event.cc: NAME_LEN -> SAFE_NAME_LEN sql/mysql_priv.h: Added SAFE_NAME_LEN sql/rpl_filter.cc: NAME_LEN -> SAFE_NAME_LEN sql/sp.cc: NAME_LEN -> SAFE_NAME_LEN sql/sp_head.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_acl.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_base.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_connect.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_parse.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_prepare.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_select.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_show.cc: NAME_LEN -> SAFE_NAME_LEN Enlarge table names for SHOW TABLES to also include optional #mysql50# sql/sql_table.cc: Fall back to use ALTER TABLE for engines that doesn't support REPAIR when doing repair for upgrade. sql/sql_trigger.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_udf.cc: NAME_LEN -> SAFE_NAME_LEN sql/sql_view.cc: NAME_LEN -> SAFE_NAME_LEN sql/table.cc: Fixed check_table_name() to not count #mysql50# as part of name If #mysql50# is part of the name, don't allow path characters in name.	15 years ago
Alexey Kopytov	6cf49743e8	Bug #53544 : Server hangs during JOIN query in stored procedure called twice in a row Queries with nested joins could cause an infinite loop in the server when used from SP/PS. When flattening nested joins, simplify_joins() tracks if the name resolution list needs to be updated by setting fix_name_res to TRUE if the current loop iteration has done any transformations to the join table list. The problem was that the flag was not reset before the next loop iteration leading to unnecessary "fixing" of the name resolution list which in turn could lead to a loop (i.e. circularly-linked part) in that list. This was causing problems on subsequent execution when used together with stored procedures or prepared statements. Fixed by making sure fix_name_res is reset on every loop iteration. mysql-test/r/join.result: Added a test case for bug #53544. mysql-test/t/join.test: Added a test case for bug #53544. sql/sql_select.cc: Make sure fix_name_res is reset on every loop iteration.	15 years ago
Evgeny Potemkin	b4dc600af9	Bug #55656 : mysqldump can be slower after bug 39653 fix. After fix for bug 39653 the shortest available secondary index was used for full table scan. Primary clustered key was used only if no secondary index can be used. However, when chosen secondary index includes all fields of the table being scanned it's better to use primary index since the amount of data to scan is the same but the primary index is clustered. Now the find_shortest_key function takes this into account. mysql-test/suite/innodb/r/innodb_mysql.result: Added a test case for the bug#55656. mysql-test/suite/innodb/t/innodb_mysql.test: Added a test case for the bug#55656. sql/sql_select.cc: Bug #55656: mysqldump can be slower after bug #39653 fix. The find_shortest_key function now prefers clustered primary key if found secondary key includes all fields of the table.	15 years ago
Alexey Kopytov	cd4ca4b7a3	Bug #55568 : user variable assignments crash server when used within query The server could crash after materializing a derived table which requires a temporary table for grouping. When destroying the temporary table used to execute a query for a derived table, JOIN::destroy() did not clean up Item_fields pointing to fields in the temporary table. This led to dereferencing a dangling pointer when printing out the items tree later in the outer SELECT. The solution is an addendum to the patch for bug37362: in addition to cleaning up items in tmp_all_fields3, do the same for items in tmp_all_fields1, since now we have an example where this is necessary. mysql-test/r/join.result: Added test cases for bug#55568 and a duplicate bug #54468. mysql-test/t/join.test: Added test cases for bug#55568 and a duplicate bug #54468. sql/field.cc: Make sure field->table_name is not set to NULL in Field::make_field() to avoid assertion failure in Item_field::make_field() after cleaning up items (the assertion fired in udf.test when running the test suite with the patch applied). sql/sql_select.cc: In addition to cleaning up items in tmp_all_fields3, do the same for items in tmp_all_fields1. Introduce a new helper function to avoid code duplication. sql/sql_select.h: Introduce a new helper function to avoid code duplication in JOIN::destroy().	15 years ago
Michael Widenius	b6fe4713fe	Fix for LP#612894 Some aggregate functions (such as MIN MAX) work incorrectly in subqueries after getting NULL value mysql-test/r/group_by.result: Added test that showed problems that no_rows_in_results() didn't work for expressions mysql-test/r/subselect4.result: Test case for LP#612894 mysql-test/t/group_by.test: Added test that showed problems that no_rows_in_results() didn't work for expressions mysql-test/t/subselect4.test: Test case for LP#612894 sql/item.h: Added restore_to_before_no_rows_in_result() Added function processor for no_rows_in_results() and restore_to_before_no_rows_in_results() to ensure it works with functions Fix that above functions are handled by Item_ref() sql/item_func.h: Ensure that no_rows_in_results() and restore_to_before_no_rows_in_result() are called for all function arguments sql/item_sum.cc: Added restore_to_before_no_rows_in_result() to restore settings after Item_sum_hybrid::no_rows_in_result() was called. This is needed to handle the case where we have made 'make_const()' on the item in opt_sum(), but the item will be reused again in a sub query. Ignore multiple calls to no_rows_in_result() as Item_ref is calling it twice. sql/item_sum.h: Added restore_to_before_no_rows_in_result(); sql/sql_select.cc: Added reset of no_rows_in_result() for JOIN::reinit() sql/sql_select.h: Added marker if no_rows_in_result() is called.	15 years ago
Georgi Kodinov	790852c0c9	Bug #55580 : segfault in read_view_sees_trx_id The server was not checking for errors generated during the execution of Item::val_xxx() methods when copying data to the group, order, or distinct temp table's row. Fixed by extending the copy_funcs() to return an error code and by checking for that error code on the places copy_funcs() is called. Test case added.	15 years ago
Jon Olav Hauglid	d62bfebc7e	Bug #54106 assert in Protocol::end_statement, INSERT IGNORE ... SELECT ... UNION SELECT ... This assert was triggered by INSERT IGNORE ... SELECT. The assert checks that a statement either sends OK or an error to the client. If the bug was triggered on release builds, it caused OK to be sent to the client instead of the correct error message (in this case ER_FIELD_SPECIFIED_TWICE). The reason the assert was triggered, was that lex->no_error was set to TRUE during JOIN::optimize() because of IGNORE. This causes all errors to be ignored. However, not all errors can be ignored. Some, such as ER_FIELD_SPECIFIED_TWICE will cause the INSERT to fail no matter what. But since lex->no_error was set, the critical errors were ignored, the INSERT failed and neither OK nor the error message was sent to the client. This patch fixes the problem by temporarily turning off lex->no_error in places where errors cannot be ignored during processing of INSERT ... SELECT. Test case added to insert.test.	15 years ago
Michael Widenius	165eb1186c	Added extra argument to longlong2str() to make it have same prototype is int2str() Changed to use longlong10_to_str() instead of longlong2str() when base is 10 or -10 as former is much faster than later Changed my_vsnprintf() to use longlong2str instead of int2str() to get rid of warnings and to get support for long pointers even when long is 32 bit. client/mysqltest.cc: longlong2str() -> longlong10_to_str() include/m_string.h: Added extra argument to longlong2str() to make it have same prototype is int2str() mysys/charset.c: Fixed compiler warning mysys/mf_soundex.c: Fixed compiler warning mysys/my_getopt.c: longlong2str() -> longlong10_to_str() sql/create_options.cc: Fixed compiler warning sql/item_strfunc.cc: Added extra argument to longlong2str sql/opt_range.cc: longlong2str() -> longlong10_to_str() sql/partition_info.cc: longlong2str() -> longlong10_to_str() sql/slave.cc: longlong2str() -> longlong10_to_str() sql/sql_bitmap.h: Added extra argument to longlong2str sql/sql_partition.cc: Added extra argument to longlong2str sql/sql_select.cc: longlong2str() -> longlong10_to_str() sql/sql_show.cc: Added extra argument to longlong2str storage/innodb_plugin/handler/ha_innodb.cc: Update to new parameters for longlong2str() storage/maria/ma_dbug.c: longlong2str() -> longlong10_to_str() storage/maria/maria_chk.c: Added extra argument to longlong2str storage/myisam/mi_dbug.c: longlong2str() -> longlong10_to_str() storage/myisam/myisamchk.c: Added extra argument to longlong2str storage/xtradb/handler/ha_innodb.cc: Update to new parameters for longlong2str() strings/longlong2str.c: Added extra argument to longlong2str() to make it have same prototype is int2str() strings/my_vsnprintf.c: Changed my_vsnprintf() to use longlong2str instead of int2str() to get rid of warnings and to get support for long pointers even when long is 32 bit. Added cast to get rid of compiler warnings	15 years ago
Michael Widenius	cd9706b27e	Fixes bug when we run bcmp() on row when the storage engine hasn't filled in all fields in the row. This was triggered by innodb.innodb_multi_update, where we had a static length row without nulls and xtradb didn't fill in the delete-marker byte include/my_bitmap.h: Added prototype for bitmap_union_is_set_all() mysys/my_bitmap.c: Added function to check if union of two bit maps covers all bits. sql/mysql_priv.h: Updated protype for compare_record() sql/sql_insert.cc: Send to compare_record() flag if all fields are used. sql/sql_select.cc: Set share->null_bytes_for_compare. sql/sql_update.cc: In compare_record() don't use the fast cmp_record() (which is basically memcmp) if we don't know that all fields exists. Don't compare the null_bytes if there is no data there. sql/table.cc: Store in share->null_bytes_for_compare the number of bytes that has null or bit fields (but not delete marker) Store in can_cmp_whole_record if we can use memcmp() (assuming all rows are read) to compare rows in compare_record() sql/table.h: Added two elements in table->share to speed up checking how updated rows can be compared.	15 years ago
unknown	e75fd9311b	Removed dead code that was made obsolete by the introduction of check_join_cache_usage() by the change: Revno: 2793 Revision Id: igor@askmonty.org-20091221022615-kx5ieiu0okmiupuc Timestamp: Sun 2009-12-20 18:26:15 -0800 Backport into MariaDB-5.2 the following: WL#2771 "Block Nested Loop Join and Batched Key Access Join"	15 years ago
Igor Babaev	b6e05df365	Fixed bug #607168 . The command CREATE TABLE AS SELECT erroneously preserved the virtual properties of the virtual fields from the select list.	15 years ago
Igor Babaev	f78b870c9b	Fixed bug #607566 . For queries with order by clauses that employed filesort usage of virtual column references in select lists could trigger assertion failures. It happened because a wrong vcol_set bitmap was used for filesort. It turned out that filesort required its own vcol_set bitmap. Made management of the vcol_set bitmaps similar to the management of the read_set and write_set bitmaps.	15 years ago
Jon Olav Hauglid	85e5ce0ba0	Bug #54734 assert in Diagnostics_area::set_ok_status This assert checks that the server does not try to send OK to the client if there has been some error during processing. This is done to make sure that the error is in fact sent to the client. The problem was that view errors during processing of WHERE conditions in UPDATE statements where not detected by the update code. It therefore tried to send OK to the client, triggering the assert. The bug was only noticeable in debug builds. This patch fixes the problem by making sure that the update code checks for errors during condition processing and acts accordingly.	15 years ago
Igor Babaev	452860dfde	Fixed bug #604503 . If the expression for a virtual column of table contained datetime comparison then the execution of the second query that used this virtual column caused a crash. It happened because the execution of the first query that used this virtual column inserted a cached item into the expression tree. The cached tree was allocated in the statement memory while the expression tree was allocated in the table memory. Now the cached items that are inserted into expressions for virtual columns with datetime comparisons are always allocated in the same mem_root as the expressions for virtual columns. So now the inserted cached items are valid for any queries that use these virtual columns.	15 years ago
Michael Widenius	e9166ca152	Fix for LP#588251: doStartTableScan() result not checked. The issue was that we didn't always check result of ha_rnd_init() which caused a problem for handlers that returned an error in this code. - Changed prototype of ha_rnd_init() to ensure that we get a compile warning if result is not checked. - Added ha_rnd_init_with_error() that prints error on failure. - Checked all usage of ha_rnd_init() and ensure we generate an error message on failures. - Changed init_read_record() to return 1 on failure. sql/create_options.cc: Fixed wrong printf sql/event_db_repository.cc: Check result from init_read_record() sql/events.cc: Check result from init_read_record() sql/filesort.cc: Check result from ha_rnd_init() sql/ha_partition.cc: Check result from ha_rnd_init() sql/ha_partition.h: Fixed compiler warning sql/handler.cc: Added ha_rnd_init_with_error() Check result from ha_rnd_init() sql/handler.h: Added ha_rnd_init_with_error() Changed prototype of ha_rnd_init() to ensure that we get a compile warning if result is not checked sql/item_subselect.cc: Check result from ha_rnd_init() sql/log.cc: Check result from ha_rnd_init() sql/log_event.cc: Check result from ha_rnd_init() sql/log_event_old.cc: Check result from ha_rnd_init() sql/mysql_priv.h: init_read_record() now returns error code on failure sql/opt_range.cc: Check result from ha_rnd_init() sql/records.cc: init_read_record() now returns error code on failure Check result from ha_rnd_init() sql/sql_acl.cc: Check result from init_read_record() sql/sql_cursor.cc: Print error if ha_rnd_init() fails sql/sql_delete.cc: Check result from init_read_record() sql/sql_help.cc: Check result from init_read_record() sql/sql_plugin.cc: Check result from init_read_record() sql/sql_select.cc: Check result from ha_rnd_init() Print error if ha_rnd_init() fails. sql/sql_servers.cc: Check result from init_read_record() sql/sql_table.cc: Check result from init_read_record() sql/sql_udf.cc: Check result from init_read_record() sql/sql_update.cc: Check result from init_read_record() storage/example/ha_example.cc: Don't return error on rnd_init() storage/ibmdb2i/ha_ibmdb2i.cc: Removed not relevant comment	15 years ago
unknown	11b1949303	Fixed an error in the creation of REF access method for materialized subquery execution, where the the REF buffer format was mistaken to be in record format instead of key format. The error was that the null byte for all fields of the record was in the front of the buffer, and not before each field data.	15 years ago
unknown	ceb5468fd8	Subquery cache (MWL#66) added. libmysqld/Makefile.am: The new file added. mysql-test/r/index_merge_myisam.result: subquery_cache optimization option added. mysql-test/r/myisam_mrr.result: subquery_cache optimization option added. mysql-test/r/subquery_cache.result: The subquery cache tests added. mysql-test/r/subselect3.result: Subquery cache switched off to avoid changing read statistics. mysql-test/r/subselect3_jcl6.result: Subquery cache switched off to avoid changing read statistics. mysql-test/r/subselect_no_mat.result: subquery_cache optimization option added. mysql-test/r/subselect_no_opts.result: subquery_cache optimization option added. mysql-test/r/subselect_no_semijoin.result: subquery_cache optimization option added. mysql-test/r/subselect_sj.result: subquery_cache optimization option added. mysql-test/r/subselect_sj_jcl6.result: subquery_cache optimization option added. mysql-test/t/subquery_cache.test: The subquery cache tests added. mysql-test/t/subselect3.test: Subquery cache switched off to avoid changing read statistics. sql/CMakeLists.txt: The new file added. sql/Makefile.am: The new files added. sql/item.cc: Expression cache item (Item_cache_wrapper) added. Item_ref and Item_field fixed for correct usage of result field and fast resolwing in SP. sql/item.h: Expression cache item (Item_cache_wrapper) added. Item_ref and Item_field fixed for correct usage of result field and fast resolwing in SP. sql/item_cmpfunc.cc: Subquery cache added. sql/item_cmpfunc.h: Subquery cache added. sql/item_subselect.cc: Subquery cache added. sql/item_subselect.h: Subquery cache added. sql/item_sum.cc: Registration of subquery parameters added. sql/mysql_priv.h: subquery_cache optimization option added. sql/mysqld.cc: subquery_cache optimization option added. sql/opt_range.cc: Fix due to subquery cache. sql/opt_subselect.cc: Parameters of the function cahnged. sql/procedure.h: .h file guard added. sql/sql_base.cc: Registration of subquery parameters added. sql/sql_class.cc: Option to allow add indeces to temporary table. sql/sql_class.h: Item iterators added. Option to allow add indeces to temporary table. sql/sql_expression_cache.cc: Expression cache for caching subqueries added. sql/sql_expression_cache.h: Expression cache for caching subqueries added. sql/sql_lex.cc: Registration of subquery parameters added. sql/sql_lex.h: Registration of subqueries and subquery parameters added. sql/sql_select.cc: Subquery cache added. sql/sql_select.h: Subquery cache added. sql/sql_union.cc: A new parameter to the function added. sql/sql_update.cc: A new parameter to the function added. sql/table.cc: Procedures to manage temporarty tables index added. sql/table.h: Procedures to manage temporarty tables index added. storage/maria/ha_maria.cc: Fix of handler to allow destoy a table in case of error during the table creation. storage/maria/ha_maria.h: .h file guard added. storage/myisam/ha_myisam.cc: Fix of handler to allow destoy a table in case of error during the table creation.	15 years ago
Sergey Glukhov	013136364c	Bug#54416 MAX from JOIN with HAVING returning NULL with 5.1 and Empty set The problem there is that HAVING condition evaluates const parts of condition despite the condition has references on aggregate functions. Table t1 became const tables after make_join_statistics and table1.pk = 1, HAVING is transformed into MAX(1) < 7 and taken away from HAVING. The fix is to skip evaluation of HAVING conts parts if HAVING condition has references on aggregate functions. mysql-test/r/having.result: test case mysql-test/t/having.test: test case sql/sql_select.cc: skip evaluation of HAVING conts parts if HAVING condition has references on aggregate functions.	15 years ago
Sergey Petrunya	e5f238a051	Fix buildbot valgrind failure - Item_in_subselect::init_left_expr_cache() should not try to guess whether the left expression is accessed "over the grouping operation" (i.e. the subselect is evaluated after the grouping while the left_expr is an Item_ref that wraps an expression from before the grouping). Instead, let new_Cached_item not to try accessing item->real_item() when creating left expr cache.	15 years ago
Sergey Glukhov	1c5388765f	Bug#51431 Wrong sort order after import of dump file The problem is that QUICK_SELECT_DESC behaviour depends on used_key_parts value which can be bigger than selected best_key_parts value if an engine supports clustered key. But used_key_parts is overwritten with best_key_parts value that prevents from correct selection of index access method. The fix is to preserve used_key_parts value for further use in QUICK_SELECT_DESC. mysql-test/r/innodb_mysql.result: test case mysql-test/t/innodb_mysql.test: test case sql/sql_select.cc: preserve used_key_parts value for further use in QUICK_SELECT_DESC	16 years ago
Sergey Petrunya	06399936fa	Post-merge fixes: - fix a bug in LooseScan strategy execution code (exposed by changing costs/QEP) - Do set join_tab->sorted=TRUE for JOIN_TABs that use LooseScan (partitioning handler cares about "sorted" parameter of h->index_init() call)	16 years ago
Ramil Kalimullin	4e8728635b	Fix for bug #54459 : Assertion failed: param.sort_length, file .\filesort.cc, line 149 (part II) Problem: the server didn't disregard sort order for some zero length tuples. Fix: skip sort order in such a case (zero length NOT NULL string functions). mysql-test/r/select.result: Fix for bug #54459: Assertion failed: param.sort_length, file .\filesort.cc, line 149 (part II) - test result. mysql-test/t/select.test: Fix for bug #54459: Assertion failed: param.sort_length, file .\filesort.cc, line 149 (part II) - test case. sql/sql_select.cc: Fix for bug #54459: Assertion failed: param.sort_length, file .\filesort.cc, line 149 (part II) - disregard sort order for zero length NOT NULL string functions along with zero length NOT NULL fields.	16 years ago
MySQL Build Team	a0a850318b	Backport into build-201006221614-5.1.46sp1 > ------------------------------------------------------------ > revno: 3351.41.1 > revision-id: alexey.kopytov@sun.com-20100430111048-jdls6ofn4kkmpt09 > parent: sergey.glukhov@sun.com-20100329134249-03wyhzp5k92dzhcb > committer: Alexey Kopytov <Alexey.Kopytov@Sun.com> > branch nick: my51-bug48419 > timestamp: Fri 2010-04-30 15:10:48 +0400 > message: > Bug #48419: another explain crash.. > > WHERE predicates containing references to empty tables in a > subquery were handled incorrectly by the optimizer when > executing EXPLAIN. As a result, the optimizer could try to > evaluate such predicates rather than just stop with > "Impossible WHERE noticed after reading const tables" as > it would do in a non-subquery case. This led to valgrind > errors and crashes. > > Fixed the code checking the above condition so that subqueries > are not excluded and hence are handled in the same way as top > level SELECTs.	16 years ago
Davi Arnaut	0f9ddfa9d8	Bug#42733: Type-punning warnings when compiling MySQL -- strict aliasing violations. One somewhat major source of strict-aliasing violations and related warnings is the SQL_LIST structure. For example, consider its member function `link_in_list` which takes a pointer to pointer of type T (any type) as a pointer to pointer to unsigned char. Dereferencing this pointer, which is done to reset the next field, violates strict-aliasing rules and might cause problems for surrounding code that uses the next field of the object being added to the list. The solution is to use templates to parametrize the SQL_LIST structure in order to deference the pointers with compatible types. As a side bonus, it becomes possible to remove quite a few casts related to acessing data members of SQL_LIST. sql/handler.h: Use the appropriate template type argument. sql/item.cc: Remove now-unnecessary cast. sql/item_subselect.cc: Remove now-unnecessary casts. sql/item_sum.cc: Use the appropriate template type argument. Remove now-unnecessary cast. sql/mysql_priv.h: Move SQL_LIST structure to sql_list.h Use the appropriate template type argument. sql/sp.cc: Remove now-unnecessary casts. sql/sql_delete.cc: Use the appropriate template type argument. Remove now-unnecessary casts. sql/sql_derived.cc: Remove now-unnecessary casts. sql/sql_lex.cc: Remove now-unnecessary casts. sql/sql_lex.h: SQL_LIST now takes a template type argument which must match the type of the elements of the list. Use forward declaration when the type is not available, it is used in pointers anyway. sql/sql_list.h: Rename SQL_LIST to SQL_I_List. The template parameter is the type of object that is stored in the list. sql/sql_olap.cc: Remove now-unnecessary casts. sql/sql_parse.cc: Remove now-unnecessary casts. sql/sql_prepare.cc: Remove now-unnecessary casts. sql/sql_select.cc: Remove now-unnecessary casts. sql/sql_show.cc: Remove now-unnecessary casts. sql/sql_table.cc: Remove now-unnecessary casts. sql/sql_trigger.cc: Remove now-unnecessary casts. sql/sql_union.cc: Remove now-unnecessary casts. sql/sql_update.cc: Remove now-unnecessary casts. sql/sql_view.cc: Remove now-unnecessary casts. sql/sql_yacc.yy: Remove now-unnecessary casts. storage/myisammrg/ha_myisammrg.cc: Remove now-unnecessary casts.	16 years ago
Sergei Golubchik	ac6b3c4430	few small MySQL bugs/issues that impact the engines, as discussed in the SE summit * remove handler::index_read_last() * create handler::keyread_read_time() (was get_index_only_read_time() in opt_range.cc) * ha_show_status() allows engine's show_status() to fail * remove HTON_FLUSH_AFTER_RENAME * fix key_cmp_if_same() to work for floats and doubles * set table->status in the server, don't force engines to do it * increment status vars in the server, don't force engines to do it mysql-test/r/status_user.result: correct test results - innodb was wrongly counting internal index searches as handler_read_* calls. sql/ha_partition.cc: compensate for handler incrementing status counters - we want to count only calls to underlying engines sql/handler.h: inline methods moved to sql_class.h sql/key.cc: simplify the check sql/opt_range.cc: move get_index_only_read_time to the handler class sql/sp.cc: don't use a key that's stored in the record buffer - the engine can overwrite the buffer with anything, destroying the key sql/sql_class.h: inline handler methods that need to see THD and TABLE definitions sql/sql_select.cc: no ha_index_read_last_map anymore sql/sql_table.cc: remove HTON_FLUSH_AFTER_RENAME sql/table.cc: set HA_CAN_MEMCMP as appropriate sql/tztime.cc: don't use a key that's stored in the record buffer - the engine can overwrite the buffer with anything, destroying the key storage/myisam/ha_myisam.cc: engines don't need to update table->status or use ha_statistic_increment anymore storage/myisam/ha_myisam.h: index_read_last_map is no more	16 years ago
Sergey Glukhov	8ede529b36	Bug#52005 'JOIN_TAB->dependent' may be incorrectly propageted for multilevel outer joins There are two problems: 1. In simplify_joins function we calculate table dependencies. If STRAIGHT_JOIN hint is used for whole SELECT we do not count it and as result some dependendecies might be lost. It leads to incorrect table order which is returned by join_tab_cmp_straight() function. 2. make_join_statistics() calculate the transitive closure for relations a particular JOIN_TAB is 'dependent on'. We aggregate the dependent table_map of a JOIN_TAB by adding dependencies from other tables which we depend on. However, this may also cause new dependencies to be available after we have completed processing a certain JOIN_TAB. Both these problems affect condition pushdown and as result condition might be pushed into wrong table which leads to crash or even omitted which leads to wrong result. The fix: 1. Use modified 'transitive closure' algorithm provided by Ole John Aske 2. Update table dependences in simplify_joins according to global STRAIGHT_JOIN hint. Note: the patch also fixes bugs 46091 & 51492 mysql-test/r/join_outer.result: test case mysql-test/t/join_outer.test: test case sql/sql_select.cc: 1. Use modified 'transitive closure' algorithm provided by Ole John Aske 2. Update table dependences in simplify_joins according to global STRAIGHT_JOIN hint.	16 years ago
Igor Babaev	d120c5b562	Changed the fixes for the following bugs: Bug #39022: completed Bug #39653: reverted as invalid Bug #45640: ameliorated, simplified, optimized Bug #48483: completed Bug #49324: improved Bug #51242/52336: reverted, applied a real fix.	16 years ago
Michael Widenius	6659ad49fe	Fixes after last merge of MySQL 5.1 - INSERT with RAND() doesn't require row based logging again - Some bugs fixed in opt_range() where we table->key_read was wrongly used .bzrignore: Ignore new xtstat binary mysql-test/r/index_merge_myisam.result: Update results (old result was wrong) mysql-test/suite/binlog/r/binlog_stm_binlog.result: Added drop table first mysql-test/suite/binlog/r/binlog_stm_unsafe_warning.result: Added test for when RAND() requires row based logging mysql-test/suite/binlog/t/binlog_stm_binlog.test: Added drop table first mysql-test/suite/binlog/t/binlog_stm_unsafe_warning.test: Added test for when RAND() requires row based logging scripts/make_binary_distribution.sh: Removed type from last commit sql/item_create.cc: Don't require row based logging when using RAND() with INSERT sql/opt_range.cc: Revert wrong patch from Oracle: - As QUICK_RANGE_SELECT uses it's own 'file' handler to the tables, one can't use 'table->key_read' as a flag to detect if index only read (keyread) is used or not - Don't set keyread if keyread is already enabled - Don't disable key read, if we didn't enable it ourselves - Simplify code (and ensure that we do proper cleanup of index only read) sql/opt_range.h: Added flags to detect if the range optimizer enabled index only read (key read) or not sql/opt_sum.cc: Use our more optimized macros sql/sql_lex.h: Added 'readable' function to check if we are in a sub query function or not (not normal query or sub query in FROM clause) sql/sql_select.cc: Use our more optimized keyread macros Added ASSERTS early Simplify code on eliminate_item_equal() Fixed that substitute_for_best_equal_field() doesn't core dump in case of out of memory conditions. Removed not needed test for 'field->maybe_null()' Replaced master_unit()->item with is_subquery_function() (More readable) sql/sql_update.cc: Use our more optimized keyread macros sql/table.cc: Use our more optimized keyread macros sql/table.h: Use separate functions to enable/disable Index only reads - Safer, more readable, better logging and faster.	16 years ago
Sergei Golubchik	1ca422c26b	bugfix from mysql-5.1, apparently lost in a merge	16 years ago
Sergei Golubchik	7715f237cc	fix compilation errors for builds w/o maria engine. tests still fail, the fix will come from 5.1 tree	16 years ago
Sergey Glukhov	278ae9a8d5	Bug#53334 Incorrect result for InnoDB in LEFT JOIN with impossible condition The fix actually reverts the change introduced by the patch for bug 51494. The fact is that patches for bugs 52177&48419 fix bugs 51194&50575 as well. mysql-test/r/innodb_mysql.result: test case mysql-test/t/innodb_mysql.test: test case sql/sql_select.cc: reverted wrong fix for bug 51494	16 years ago
Martin Hansson	1eada91053	Bug#52357: Assertion failed: join->best_read in greedy_search optimizer_search_depth=0 The algorithm inside restore_prev_nj_state failed to properly update the counters within the NESTED_JOIN tree. The counter was decremented each time a table in the node was removed from the QEP, the correct thing to do being only to decrement it when the last table in the child node was removed from the plan. This lead to node counters getting negative values and the plan thus appeared impossible. An assertion caught this. Fixed by not recursing up the tree unless the last table in the join nest node is removed from the plan	16 years ago
unknown	50ddf3c111	Fixed bug #53334 . The fix actually reverts the change introduced by the patch for bug 51494 The fact is that the patch for bug 52177 fixes bug 51194 as well.	16 years ago

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2657 Commits (52090a443493f5a8410094b43bfa5cdde8c32f5d)