unknown 5b8cdbf4a6 Fixed bug#36006: Optimizer does table scan for SELECT COUNT(*) ... for ENGINE=MRG_MYISAM (should be optimized out). Before WL#3281 MERGE engine had the HA_NOT_EXACT_COUNT flag unset, and it worked with COUNT optimization as desired. After the removal of the HA_NOT_EXACT_COUNT flag neither HA_STATS_RECORDS_IS_EXACT (opposite to former HA_NOT_EXACT_COUNT flag) nor modern HA_HAS_RECORDS flag were not added to MERGE table flag mask. 1. The HA_HAS_RECORDS table flag has been set. 2. The ha_myisammrg::records method has been overridden to calculate total number of records in underlying tables. storage/myisammrg/myrg_records.c: Fixed bug#36006: Optimizer does table scan for select count(*). The myrg_records function has been added to calculate total number of records in underlying tables. include/myisammrg.h: Fixed bug#36006: Optimizer does table scan for select count(*). The myrg_records function declaration has been added. mysql-test/r/merge.result: Added test case for bug#36006. mysql-test/t/merge.test: Added test case for bug#36006. storage/myisammrg/CMakeLists.txt: Fixed bug#36006: Optimizer does table scan for select count(*). New myrg_records.c file has been added. storage/myisammrg/Makefile.am: Fixed bug#36006: Optimizer does table scan for select count(*). New myrg_records.c file has been added. storage/myisammrg/ha_myisammrg.cc: Fixed bug#36006: Optimizer does table scan for select count(*). The ha_myisammrg::records method has been overridden. storage/myisammrg/ha_myisammrg.h: Fixed bug#36006: Optimizer does table scan for select count(*). 1. The HA_HAS_RECORDS table flag has been set. 2. The ha_myisammrg::records method has been overridden.		2008-04-26 02:45:58 +05:00
..
.cvsignore
CMakeLists.txt	Fixed bug#36006: Optimizer does table scan for SELECT COUNT(*)	2008-04-26 02:45:58 +05:00
ha_myisammrg.cc	Fixed bug#36006: Optimizer does table scan for SELECT COUNT(*)	2008-04-26 02:45:58 +05:00
ha_myisammrg.h	Fixed bug#36006: Optimizer does table scan for SELECT COUNT(*)	2008-04-26 02:45:58 +05:00
make-ccc
Makefile.am	Fixed bug#36006: Optimizer does table scan for SELECT COUNT(*)	2008-04-26 02:45:58 +05:00
myrg_close.c	Bug#30273 - merge tables: Can't lock file (errno: 155)	2007-12-11 15:32:10 +01:00
myrg_create.c	Fixed a lot of compiler warnings and errors detected by Forte C++ on Solaris	2007-08-13 16:11:25 +03:00
myrg_def.h
myrg_delete.c
myrg_extra.c	Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE	2007-11-15 20:25:43 +01:00
myrg_info.c
myrg_locking.c	BUG#29806 - binlog_innodb.test creates a server log	2007-07-25 19:56:17 +05:00
myrg_open.c	Bug#30273 - merge tables: Can't lock file (errno: 155)	2007-12-11 15:32:10 +01:00
myrg_panic.c
myrg_queue.c
myrg_range.c
myrg_records.c	Fixed bug#36006: Optimizer does table scan for SELECT COUNT(*)	2008-04-26 02:45:58 +05:00
myrg_rfirst.c
myrg_rkey.c
myrg_rlast.c
myrg_rnext.c
myrg_rnext_same.c
myrg_rprev.c
myrg_rrnd.c
myrg_rsame.c
myrg_static.c
myrg_update.c
myrg_write.c
plug.in