MySQL Forums
Forum List  »  Optimizer & Parser

Re: bulk update very slow
Posted by: Rick James
Date: September 27, 2012 08:19PM

Buffer pool too small? See
http://mysql.rjweb.org/doc.php/memory

Add a "compound" index:
INDEX(aggregatorID, shortcodeID)
It may help significantly.

How big is the table? (SHOW TABLE STATUS) Sounds like it is 'large', in which case adding the INDEX will take some time.

Minor note: TINYTEXT is virtually useless, and slightly harmful in a few cases; recommend changing to VARCHAR(...) of some appropriate size.

Options: ReplyQuote


Subject
Views
Written By
Posted
4981
September 25, 2012 02:51PM
1931
September 26, 2012 02:58PM
3325
September 27, 2012 12:01PM
Re: bulk update very slow
2014
September 27, 2012 08:19PM


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.