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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 27452 | 2007-03-26 17:35 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5901 days) | S3 | 5.0.40-BK, 5.0.24a-debian-log, 5.1.31-bzr, 6.0.7-alpha, 6.0.9-bzr | Linux | Any | Correlated subquery produces inefficient optimizer plan for INFORMATION_SCHEMA |
| 35165 | 2008-03-08 17:48 | 2022-12-04 20:45 | MySQL Server: CSV | Verified (6151 days) | S5 | 5.1 | Any | Any | Logging to table is slow for large queries |
| 38397 | 2008-07-27 20:13 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (6013 days) | S3 | 5.1.26, 5.0.62 | Any | Any | select distinct + order by desc is executed inefficiently |
| 40367 | 2008-10-28 8:55 | 2011-02-16 23:43 | MySQL Server: Information schema | Verified (5835 days) | S3 | 5.1.28, 5.1.29, 5.0, 5.1 bzr | Any | Any | SHOW on a broad view is taking too long |
| 42705 | 2009-02-09 16:37 | 2011-02-16 23:43 | MySQL Server: General | Verified (5775 days) | S3 | 5.1.30 | Any | Any | Reduce malloc/free during query lifecycle. |
| 44201 | 2009-04-10 3:04 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5326 days) | S3 | 5.1.32, 5.1.35-bzr, 6.0.11-bzr, 5.0, 5.6.99 | Any | Any | Performance problem with View |
| 45424 | 2009-06-10 6:58 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5696 days) | S2 | 5.0.51a, 5.0.77 and 5.1.34, 5.1, 6.0 bzr | Linux | Any | UPDATE statement cause full table scan ? |
| 46376 | 2009-07-24 17:05 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5647 days) | S5 | 5.0.85, 5.1.36, 5.1.38, 5.1.39 | Windows (XP) | Any | Optimizer choose wrong index even when where clause and order-by are covered |
| 46648 | 2009-08-11 11:41 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5628 days) | S3 | 5.1.32, 4.1, 5.0, 5.1, azalea bzr | Linux (2.6.28.7) | Any | SQL_CALC_FOUND_ROWS kills performance with ORDER BY and LIMIT |
| 48359 | 2009-10-27 19:24 | 2012-05-18 20:19 | MySQL Cluster: Cluster (NDB) storage engine | In progress (5317 days) | S3 | mysql-5.1-telco-7.1 | Linux (RHEL 4) | Any | ALTER TABLE xx COMMENT - locks large tables |
| 47884 | 2009-10-07 3:24 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5463 days) | S2 | 5.1.39, 5.1.44, 5.5.99 | Linux (Linux web2 2.6.18-92.1.18.el5.028stab060.8 #1 SMP Mon Feb 9 21:44:50 MSK 2009 x86_64) | Any | MySQL 5.1.39 failed to use index |
| 21978 | 2006-09-01 22:13 | 2011-02-16 23:43 | MySQL Server: Options | Verified (6249 days) | S3 | 4.0.18, 5.0, 6.0.10, 5.5 | Windows (Windows 2000) | Any | 'flush_time' value set for 1800 sec. on Non Win9x/Me installs by default |
| 50367 | 2010-01-15 14:12 | 2011-02-16 23:44 | MySQL Server: General | Verified (5415 days) | S5 | 5.1.42, 5.1 bzr | Any (MS Windows 32 bits, Mac) | Any | REPLACE has quadradic computational complexity on windows server (but not linux) |
| 55979 | 2010-08-13 22:05 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5264 days) | S5 | 5.1.39 | Linux | Any | Key not used if IN() list contains mix of strings and integers |
| 56924 | 2010-09-22 11:26 | 2018-06-24 20:45 | MySQL Workbench: SQL Editor | Verified (4791 days) | S2 | 5.2.28 | Linux (Ubuntu 10.04) | Any | Memory leak? Possibly not a bug. |
| 56965 | 2010-09-23 9:22 | 2015-08-10 14:34 | MySQL Server: mysqldump Command-line Client | Verified (5220 days) | S3 | 5.1.44 | Linux (2.6.18-164.6.1.el5 #1 SMP, CentOS 5.5) | Any | mysqldump poor performance with large number of tables |
| 58008 | 2010-11-05 9:38 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5183 days) | S3 | 5.1, 5.0 | Any | Any | wrong datatype (blob) in the resultset if the string is larger than 512 bytes |
| 58928 | 2010-12-14 20:58 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5144 days) | S3 | 5.1-bugteam | Any | Any | "not exists" optimization not applied if relevant table is not single inner one |
| 59727 | 2011-01-25 21:36 | 2016-12-04 20:45 | MySQL Server: InnoDB storage engine | Verified | S5 | 5.1 plugin, 5.5, 5.6 | Any | Any | LRU search can be inefficient with compression |
| 59557 | 2011-01-17 15:26 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5110 days) | S2 | 5.1, 5.5 | Any | Any | MySQL uses order of fields in GROUP BY when ORDER BY NULL is specified |
| 60087 | 2011-02-10 13:14 | 2016-12-04 20:45 | MySQL Server: InnoDB storage engine | Verified (5086 days) | S3 | 5.5 | Any | Any | Patch: Minimize InnoDB I/O load by adding a prefetch stage |
| 60345 | 2011-03-04 17:11 | 2013-01-15 15:25 | MySQL Server | Verified (4381 days) | S5 | 5.1.55 6.0.11 | Any | Any | trim trailing spaces processes data only byte wise (the continue of bug14637) |
| 60348 | 2011-03-04 20:14 | 2013-01-15 15:25 | MySQL Server | Verified (4381 days) | S5 | 5.1.55 | Any | Any | trim trailing spaces processes data only byte wise (continue of bug14637 (2)) |
| 60349 | 2011-03-04 21:20 | 2013-01-15 15:25 | MySQL Server | Verified (4381 days) | S5 | 5.1.55 | Any | Any | trim beginning spaces processes data only byte wise (continue of bug14637 (3)) |
| 60351 | 2011-03-04 22:15 | 2013-01-15 15:27 | MySQL Server | Verified (4381 days) | S5 | 5.1.55 | Any | Any | trim same character processes data only byte wise (continue of bug14637 (4)) |
| 66563 | 2012-08-28 5:37 | 2012-08-28 6:55 | MySQL Server: InnoDB Plugin storage engine | Verified (4521 days) | S5 | 5.1,5.6 | Any | Any | reduce the number of redundant calls to btr_cur_optimistic_insert() |
| 69118 | 2013-05-02 2:28 | 2013-05-02 14:00 | MySQL Server: Command-line Clients | Verified (4274 days) | S5 | 5.6, 5.7 | Any | Any | Wasted work in method get_table_structure() |
| 68572 | 2013-03-05 10:57 | 2014-02-19 16:19 | MySQL Server: Federated storage engine | Verified (4331 days) | S3 | 5.5.25a, 5.5.31 | Any | Any | FEDERATED using SHOW TABLE STATUS causes performance problems for InnoDB tables |
| 64340 | 2012-02-15 14:07 | 2013-06-14 15:35 | MySQL Server: InnoDB Plugin storage engine | Verified (4231 days) | S5 | 5.1.52, 5.1.61 | Any | Any | race on no_flush event during buf_flush_free_margin |
| 75504 | 2015-01-14 12:52 | 2015-01-22 14:51 | MySQL Server: InnoDB storage engine | Verified (3644 days) | S5 | Any | Any | btr_search_guess_on_hash makes found block young twice? |
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