Re: Need help understanding optimizer behavior in 5.6
> where e.uneven_val between 300 and 32000
What fraction of `e` does that represent in your small test? If it is most of the table, then the optimizer may have decided not to bother with INDEX(uneven_val).
You could create a separate database on the production system for running this test in. That _might_ show you that 5.0 did the same thing. (Or it might not.)
Subject
Views
Written By
Posted
2903
June 22, 2015 08:30AM
1328
June 22, 2015 08:31AM
Re: Need help understanding optimizer behavior in 5.6
1305
June 23, 2015 07:00PM
1311
June 24, 2015 06:22AM
1322
June 25, 2015 11:37PM
1333
June 26, 2015 06:56AM
1310
June 30, 2015 05:46AM
1888
June 30, 2015 08:06AM
1256
June 30, 2015 08:16AM
1655
July 01, 2015 03:49AM
1467
July 01, 2015 06:48AM
1309
July 01, 2015 03:05PM
1356
July 02, 2015 07:48AM
Sorry, you can't reply to this topic. It has been closed.
Content reproduced on this site is the property of the respective copyright holders.
It is not reviewed in advance by Oracle and does not necessarily represent the opinion
of Oracle or any other party.