ID,Entered,Modified,Type,Status,Severity,Version,OS,Summary 39944,2008-10-09 02:10:09,2008-10-09 07:10:21,Server: Optimizer,Verified,S3,"4.1, 5.0, 5,1, 6.0 bzr","Any","With join buffer executor ignores index scan" 43341,2009-03-03 21:39:52,2009-03-03 21:55:02,Server: Optimizer,Verified,S2,"5.1","Any","FORCE INDEX FOR ORDER BY does not affect join queries" 43342,2009-03-03 21:54:37,2009-03-03 22:05:03,Server: Optimizer,Verified,S2,"5.1, 6.0","Any","FORCE INDEX hint does not differentiate between ORDER BY and GROUP BY" 48617,2009-11-08 06:47:11,2009-11-19 10:57:29,Server: General,Verified,S2,"5.1","Any","A bug in the merge_buffers code" 55423,2010-07-21 04:31:29,2010-07-21 04:59:10,Server: General,Verified,S3,"5.1","Any","ROUND can return wrong result if its second argument is NULL" 57024,2010-09-26 04:44:22,2010-09-29 12:11:16,Server: Optimizer,Verified,S2,"5.1","Any","Serious performance issue with an outer join" 70491,2013-10-02 19:04:23,2013-10-02 20:34:07,Server: Optimizer,Verified,S2,"5.6.13","Any","SELECT DISTINCT may return a wrong result if a join buffer is involved"