Re: Query optimize on large database
why not just:
SELECT d.owner_id, COUNT(*) AS kolvo
FROM data d
WHERE d.owner_id = @user_id
GROUP BY d.owner_id
?
I see no need to JOIN self here
Subject
Views
Written By
Posted
1378
July 13, 2016 01:40AM
801
July 15, 2016 05:12PM
783
July 16, 2016 04:15AM
744
July 16, 2016 12:09PM
807
July 16, 2016 12:36PM
767
July 16, 2016 02:46PM
809
July 17, 2016 11:22AM
788
July 18, 2016 04:28AM
747
July 18, 2016 08:40AM
Re: Query optimize on large database
737
July 20, 2016 04:46AM
802
July 20, 2016 08:06AM
759
July 20, 2016 09:29AM
781
July 21, 2016 04:35AM
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.