MySQL Forums
Forum List  »  Optimizer & Parser

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?

Options: ReplyQuote


Subject
Views
Written By
Posted
Re: Compound index (pkey) not used when it should be
202
November 29, 2017 04:21PM


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.