Re: index not being pick up
Again, even without an OR clause in the join eg ...
select a.* from a join b using (pk_of_a);
... MySQL usually won't use a key on table a in ...but if a.* becomes a list of indexed columns, it will.
Edited 1 time(s). Last edit at 01/21/2018 09:47PM by Peter Brawley.
Subject
Views
Written By
Posted
1045
January 15, 2018 11:57PM
397
January 16, 2018 12:19AM
363
January 16, 2018 04:39PM
375
January 16, 2018 07:49PM
407
January 17, 2018 12:26AM
399
January 17, 2018 01:07AM
620
January 17, 2018 01:19AM
438
January 17, 2018 12:41PM
390
January 19, 2018 07:26AM
410
January 21, 2018 04:31PM
Re: index not being pick up
374
January 21, 2018 05:41PM
452
January 22, 2018 03:00AM
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.