MySQL Forums
Forum List  »  Optimizer & Parser

Re: Why not use index
Posted by: zhang peng
Date: November 11, 2015 12:15AM

I'm sure that mysql does not use the right table's index,but if I split this sql into two sqls, they can use index, I don't know why.

Options: ReplyQuote


Subject
Views
Written By
Posted
1633
November 08, 2015 11:14PM
820
November 09, 2015 11:42AM
843
November 11, 2015 12:17AM
876
November 10, 2015 10:35AM
Re: Why not use index
1029
November 11, 2015 12:15AM
913
November 11, 2015 03:40AM
1148
November 11, 2015 07:29PM
811
November 11, 2015 11:00PM
890
November 12, 2015 01:48AM
871
November 16, 2015 12:17AM


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.