MySQL Forums
Forum List  »  Optimizer & Parser

Advanced Search
New Topic

Re: Compound index (pkey) not used when it should be
Posted by: Peter Brawley
Date: November 29, 2017 04:21PM

https://dev.mysql.com/doc/refman/5.5/en/innodb-buffer-pool.html may be useful.

InnoDB seems to have decided that using the data file will be just as fast. What's the performance without the Limit clause? Did you try Force Index, and if so with what result?

Navigate: Previous Message• Next Message
Options: Reply• Quote


Subject
Views
Written By
Posted
Compound index (pkey) not used when it should be
1598
Dan Parker
November 29, 2017 01:39PM
Re: Compound index (pkey) not used when it should be
813
Peter Brawley
November 29, 2017 04:21PM
Re: Compound index (pkey) not used when it should be
844
Dan Parker
November 29, 2017 04:38PM
Re: Compound index (pkey) not used when it should be
798
Peter Brawley
November 29, 2017 05:16PM
Re: Compound index (pkey) not used when it should be
901
Dan Parker
November 29, 2017 05:25PM
Re: Compound index (pkey) not used when it should be
792
Peter Brawley
November 29, 2017 06:13PM
Re: Compound index (pkey) not used when it should be
880
Dan Parker
November 29, 2017 06:23PM
Re: Compound index (pkey) not used when it should be
958
Peter Brawley
November 29, 2017 07:46PM
Re: Compound index (pkey) not used when it should be
918
Dan Parker
November 30, 2017 10:31AM
Re: Compound index (pkey) not used when it should be
833
Peter Brawley
December 01, 2017 11:02AM
Re: Compound index (pkey) not used when it should be
799
Dan Parker
December 01, 2017 11:05AM
Re: Compound index (pkey) not used when it should be
896
Peter Brawley
December 01, 2017 11:19AM
Re: Compound index (pkey) not used when it should be
924
Dan Parker
December 01, 2017 11:26AM
Re: Compound index (pkey) not used when it should be
814
Peter Brawley
December 01, 2017 01:04PM
Re: Compound index (pkey) not used when it should be
873
Dan Parker
December 01, 2017 01:10PM
Re: Compound index (pkey) not used when it should be
847
Peter Brawley
December 01, 2017 05:01PM
Re: Compound index (pkey) not used when it should be
898
Øystein Grøvlen
December 01, 2017 10:10AM
Re: Compound index (pkey) not used when it should be
904
Dan Parker
December 01, 2017 10:36AM


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.