mariadb

Tree: 7a02c71f77

Author	SHA1	Message	Date
igor@olga.mysql.com	60ac1f1b78	Fixed bug #24987 . Made the function opt_sum_query to return HA_ERR_KEY_NOT_FOUND when no matches were found (instead of -1 it returned prior this patch). This changes allow us to avoid possible conflicts with return values from user-defined handler methods which also may return -1. No particular test cases are provided with this fix.	19 years ago
kent@mysql.com/kent-amd64.(none)	226a5c833f	Many files: Changed header to GPL version 2 only	19 years ago
stewart@willster.(none)	9d2e6b8d23	BUG#19914 SELECT COUNT(*) sometimes returns MAX_INT on cluster tables allow handler::info to return an error code (that will be returned to the user)	20 years ago
gkodinov/kgeorge@macbook.gmz	9ff33b5d93	Bug #16792 query with subselect, join, and group not returning proper values Treat queries with no FROM and aggregate functions as normal queries, so the aggregate function get correctly calculated as if there is 1 row. This means that they will be considered to have one row, so COUNT(*) will return 1 instead of 0. Other aggregates will behave in compatible manner.	20 years ago
svoj@may.pils.ru	8b98be2844	BUG#20357 - Got error 124 from storage engine using MIN and MAX functions in queries Using MAX()/MIN() on table with disabled indexes (by ALTER TABLE) results in error 124 (wrong index) from storage engine. The problem was that optimizer use disabled index to optimize MAX()/MIN(). Normally it must skip disabled index and perform table scan. This patch skips disabled indexes for min/max optimization.	20 years ago
igor@rurik.mysql.com	5cdd1eb62d	Post-review corrections of the fix for bug #18206 .	20 years ago
igor@rurik.mysql.com	f1afd17821	Cleanup for the fix of bug 18206.	20 years ago
igor@rurik.mysql.com	37e049db01	Fixed bug #18206 . The bug report revealed two problems related to min/max optimization: 1. If the length of a constant key used in a SARGable condition for for the MIN/MAX fields is greater than the length of the field an unwanted warning on key truncation is issued; 2. If MIN/MAX optimization is applied to a partial index, like INDEX(b(4)) than can lead to returning a wrong result set.	20 years ago
sergefp@mysql.com	be0ebd9e0a	Remove redundant code in opt_sum_query()	20 years ago
igor@rurik.mysql.com	f485125968	Fixed bug #18237 . The code in opt_sum_query that prevented the COUNT/MIN/MAX optimization from being applied to outer joins was not adjusted after introducing nested joins. As a result if an outer join contained a reference to a view as an inner table the code of opt_sum_query missed the presence of an on expressions and erroneously applied the mentioned optimization.	20 years ago
igor@rurik.mysql.com	d2cfad167b	Fixed bug #16016 : MIN/MAX optimization was not applied to views.	20 years ago
monty@mysql.com	ea6d5f9ec3	Fixed error found during review of new pushed code	20 years ago
msvensson@neptunus.(none)	d55eeed8fd	Merge from 4.1 to 5.0	20 years ago
timour@mysql.com	633d118d01	Fix for BUG#12882 - min/max inconsistent on empty table. The problem was in that the MIN/MAX optimization in opt_sum_query was replacing MIN/MAX functions with their constant argument without taking into account that a query has no result rows.	20 years ago
evgen@moonbone.local	afa8187fb7	Fix bug #13218 : InnoDB: using a partial-field key prefix in search This is backport from 5.0 of fix for bug #11039	20 years ago
monty@mysql.com	e18bb16ee5	Fixed wrong key length when using MIN() optimization (non fatal, but caused InnoDB to write warnings to the log file) This fixed bug #11039: InnoDB: Warning: using a partial-field key prefix in search	21 years ago
monty@mishka.local	a9f6aab4c9	Fixes while reviewing new code Added option --count to mysqlshow (to show number of rows) Fixed possible core dump in information schema	21 years ago
igor@linux.local	6d7862aeaf	logging_ok: Logging to logging@openlogging.org accepted func_group.result, func_group.test: Added a test case for bug #8893. opt_sum.cc: A misplaced initialization for the returned parameter prefix_len in the function find_key_for_maxmin caused usage of a wrong key prefix by the min/max optimization in cases when the matching index was not the first index that contained the min/max field.	21 years ago
monty@mysql.com	d35140a851	First stage of table definition cache Split TABLE to TABLE and TABLE_SHARE (TABLE_SHARE is still allocated as part of table, will be fixed soon) Created Field::make_field() and made Field_num::make_field() to call this Added 'TABLE_SHARE->db' that points to database name; Changed all usage of table_cache_key as database name to use this instead Changed field->table_name to point to pointer to alias. This allows us to change alias for a table by just updating one pointer. Renamed TABLE_SHARE->real_name to table_name Renamed TABLE->table_name to alias Renamed TABLE_LIST->real_name to table_name	21 years ago
monty@mysql.com	67ce247965	Add support for up to VARCHAR (size up to 65535) Renamed HA_VAR_LENGTH to HA_VAR_LENGTH_PART Renamed in all files FIELD_TYPE_STRING and FIELD_TYPE_VAR_STRING to MYSQL_TYPE_STRING and MYSQL_TYPE_VAR_STRING to make it easy to catch all possible errors Added support for VARCHAR KEYS to heap Removed support for ISAM Now only long VARCHAR columns are changed to TEXT on demand (not CHAR) Internal temporary files can now use fixed length tables if the used VARCHAR columns are short	21 years ago
gluh@gluh.mysql.r18.ru	321f803784	WL#1629: SHOW with WHERE(partially) & WL#173: Create Data Dictionary Tables for SHOW Commands	21 years ago
igor@rurik.mysql.com	cfbd2b7f7a	opt_sum.cc: Slightly improved the fix for bug #5406.	21 years ago
bell@sanja.is.com.ua	f797298fc5	fixed merged view fields names (BUG#5147) support of merged VIEW over several tables added (WL#1809)	21 years ago
igor@rurik.mysql.com	7777f759cb	func_group.test, func_group.result: Added test case for bug #5406. opt_sum.cc: Fixed bug #5406.	22 years ago
timour@mysql.com	e2cd3dd1ce	WL#1724 "Min/Max Optimization for Queries with Group By Clause" - after-review changes - merged with the source tree from 204-08-27	22 years ago
acurtis@pcgem.rdg.cyberkinetica.com	bc78a46ac4	Bug#4411 Fix for server hang bug	22 years ago
bell@sanja.is.com.ua	9336d36cf8	VIEW two TABLE_LIST copy eliminated	22 years ago
monty@mysql.com	db7efa2780	New handler::index_flags() definition to make it easy to check the full used key and a specific key part. Added key part to optimize_range() to fix problems when using fields in key parts.	22 years ago
serg@serg.mylan	08738d2847	fowwlowup fixes for index_flags()	22 years ago
serg@serg.mylan	3f1c4ba745	handler interface cleanups: more logical table/index_flags return HA_ERR_WRONG_COMMAND instead of abstract methods where appropriate max_keys and other limits renamed to max_supported_keys/etc max_keys/etc are now wrappers to max_supported_keys/etc ha_index_init/ha_rnd_init/ha_index_end/ha_rnd_end are now wrappers to real {index,rnd}_{init,end} to enforce strict pairing	22 years ago
monty@mishka.local	314a8bf114	key_cmp -> key_cmp_if_same New records_in_range() interface (similar to read_range()) Macros for faster bitmap handling Simplify read_range() code (#WL1786) New general key_cmp() function to compare keys	22 years ago
monty@mysql.com	007d353eee	Proper fix for bug with BLOB in MIN/MAX	22 years ago
Sinisa@sinisa.nasamreza.org	e62b6365ce	opt_sum.cc: A fix for a bug #3189, pertaining to crashing MySQL server when a query with MIN / MAX on the BLOB column is to be optimised	22 years ago
igor@rurik.mysql.com	3938ac5436	This ChangeSet Introdices Item_equal. The objects of this class represent multiple conjunctive equalities in where conditions: =(f1,f2,...fn) <=> f1=f2 and f2= ... and =fn. The objects are used to generate new possibale paths to access the tables when executing a query. They are also used to optimize the execution plan chosen by the optimizer for the query.	22 years ago
monty@mysql.com	7c6113a39f	Merge key cache structures to one Fixed compiler warnings (IRIX C compiler and VC++)	22 years ago
serg@serg.mylan	8cc3951c8f	key_map with more that 64 bits width	22 years ago
monty@mashka.mysql.fi	6aa8929cf3	After merge fixes Added initialization of all important global variables	23 years ago
heikki@hundin.mysql.fi	ef6f91458d	sql_select.cc, opt_sum.cc: Fix bug: if MIN() or MAX() resulted in a deadlock or a lock wait timeout, MySQL did not return an error, but NULL as the function value	23 years ago
monty@narttu.mysql.fi	7410b6cbdf	Fix problem where key_read was not cleaned up properly, which caused assert in innodb test.	23 years ago
igor@hundin.mysql.fi	3503d4797b	func_group.result: Added new tests for better coverage of min/max optimization code. func_group.test: Added new tests for better coverage of min/max optimization code. opt_sum.cc: Fixed wrong previous manual merge. Fixed bugs concerning fields used in min/max functions for which there are conditions of the form field=const.	23 years ago
igor@hundin.mysql.fi	bab644a96c	func_group.result, func_group.test: Added tests for extended max/min optimization opt_sum.cc: Extended min/max optimization	23 years ago
igor@hundin.mysql.fi	726e59827a	opt_sum.cc: Correction for min/max optimization of queries with outer joins	23 years ago
serg@serg.mysql.com	9dd13a9a4a	backported MERGE+MAX bugfix from 4.0	23 years ago
monty@mashka.mysql.fi	1b9b042654	Fix problem in MIN/MAX optimisation (from last patch) Don't make OLD_PASSWORD() a reserved word	23 years ago
monty@mashka.mysql.fi	e3cd63521c	Fix for MIN/MAX with empty tables MIN(key_column) could in some cases return NULL on a column with NULL and other values. MIN(key_column) and MAX(key_column) could in some cases return wrong values when used in OUTER JOIN.	23 years ago
serg@serg.mysql.com	390982aaa3	bugfix for MERGE tables and MAX(key)	23 years ago
bar@bar.mysql.r18.ru	e5103ce714	Less "default_charset_info"	23 years ago
monty@hundin.mysql.fi	fab1fcea8b	Fixed bug in MAX() optimization when used with JOIN and ON expressions (Patch from 4.0.5)	23 years ago
monty@hundin.mysql.fi	e08ed8a582	Fixed bug in MAX() optimization when used with JOIN and ON expressions	23 years ago
Sinisa@sinisa.nasamreza.org	a2356e3033	My previous patch was not good at all. This one is better, but should not be final. Better fix is to make some changes in ha_myisammrg::index_read This patch also reverts my previous one ...	24 years ago

1 2

85 Commits (7a02c71f77a9f4f56b53b8e9545328bbcbe9732a)