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ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
---|---|---|---|---|---|---|---|---|---|
8113 | 2005-01-24 15:43 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5337 days) | S5 | 5.0, 5.1, azalea bzr | Any | Any | Select with between optimization |
24251 | 2006-11-13 10:58 | 2018-09-09 20:45 | MySQL Server: Optimizer | In progress (5240 days) | S5 | 5.0.30-BK, 5.1.12 | Linux (Linux, Win XP SP2) | Any | Non-optimal choice of indexes for queries |
24770 | 2006-12-02 0:37 | 2018-09-09 20:45 | MySQL Server: Optimizer | In progress (4757 days) | S5 | 5.1 | Any (all) | Any | update with subquery slow |
26832 | 2007-03-04 18:17 | 2011-04-05 14:46 | MySQL Server: Optimizer | Verified (4742 days) | S5 | 5.5 | Any | Any | ENUM types not optimized |
30342 | 2007-08-09 18:52 | 2015-10-07 14:54 | MySQL Server: Optimizer | Verified (3096 days) | S5 | 5.0.37, 5.6.17 | Any | Any | Equality propagation can make optimization much slower |
33381 | 2007-12-19 19:27 | 2018-09-09 20:45 | MySQL Server: Data Types | Verified (5288 days) | S5 | 5.0.45, 5.0.52, 5.1.40 | Linux | Any | Temporary table created on disk when it should be in ram |
34310 | 2008-02-05 14:51 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (3754 days) | S5 | 5.0.51a-log, 5.0.54, 5.6.14 | Linux | Any | Optimizer is inefficient by using ORDER BY function() and LIMIT |
38550 | 2008-08-04 21:47 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5643 days) | S5 | 5.0.60, 5.1 | Any | Any | multiple optimizer bugs for queries with references from preceding table |
41220 | 2008-12-04 9:59 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5337 days) | S5 | 5.1.30, 5.0, 5.1, azalea bzr | Any | Any | LEFT JOIN with compound clause uses table scan, while INNER JOIN uses indexes |
41871 | 2009-01-05 15:47 | 2018-09-09 20:45 | MySQL Server: MyISAM storage engine | Verified (5292 days) | S5 | 5.1.30 | Any (MS Windows, Mac OS X) | Any | Select + Index + Limit + offset on large MyIsam tables give very bad performance |
Showing 1-10 of 97 (Edit, Save, CSV, Feed) | Show Next 10 Entries » |