MySQL Bugs MySQL AB Bugs Database http://bugs.mysql.com/ MySQL Bugs http://bugs.mysql.com/images/mysql_100x52-64.gif http://bugs.mysql.com/ http://bugs.mysql.com/49200 #49200: Select_type in explain output incorrect for semijoin queries http://bugs.mysql.com/bug.php?id=49200 Submitted by: Roy Lyseng
Category: Server: Optimizer
Status: Verified
Severity: 3
OS: Any
Version: 6.0
]]> Mon, 30 Nov 2009 10:19:17 +0000 Server: Optimizer http://bugs.mysql.com/55893 #55893: optimizer_switch should report which variable it can not process http://bugs.mysql.com/bug.php?id=55893 Submitted by: Jonathan Miller
Category: Server: Options
Status: Verified
Severity: 3
OS: Any
Version: mysql-next-mr-opt-backporting
]]> Tue, 10 Aug 2010 20:08:14 +0000 Server: Options http://bugs.mysql.com/115353 #115353: Setting index_merge_union leads to incorrect results. http://bugs.mysql.com/bug.php?id=115353 Submitted by: hongjun xiao
Category: Server: Optimizer
Status: Verified
Severity: 2
OS: Any
Version: 8.0.37, 8.4.0 LTS
]]> Mon, 17 Jun 2024 07:22:54 +0000 Server: Optimizer http://bugs.mysql.com/118871 #118871: Constant conditions in SQL with derived views are not passed.new http://bugs.mysql.com/bug.php?id=118871 Submitted by: SONGHUA ZHENG
Category: Server: Optimizer
Status: Verified
Severity: 3
OS: Linux (Linux (Rocky Linux release 8.8 (Green Obsidian)))
Version: 8.0.43 MySQL Community Server - GPL
]]> Thu, 21 Aug 2025 02:37:57 +0000 Server: Optimizer http://bugs.mysql.com/82725 #82725: Extremely slow query when optimizer_switch='derived_merge=ON' http://bugs.mysql.com/bug.php?id=82725 Submitted by: Zaihua Ji
Category: Server: Optimizer
Status: Verified
Severity: 5
OS: CentOS (Linux rda-db-rep.ucar.edu 3.10.0-327.28.2.el7.x86_64 #1 SMP Wed Aug 3 11:11:39 UTC 2016 x86_64 x86_6)
Version: 5.7.14, 5.7.15
]]> Thu, 25 Aug 2016 15:55:19 +0000 Server: Optimizer