MySQL Forums
Forum List  »  Performance

Re: DELETE performance problem
Posted by: Bradford Folkens
Date: January 31, 2005 08:45AM

Maybe this will help some people...

I think I've found a workaround to the problem with the slow DELETEs

It seems that multi-table delete I tried in the earlier post are incredibly slow (around 20 hours) - the same query, when using single table deletes (in series) is orders of magnitude faster. First delete took 10 seconds, second only took 5 mintues - which is a *dramatic* increase in speed.

I know a multi-table delete must be slower (key lookups, merge, etc) - but I had no idea it could be so much slower.

Unfortunately there are still deletes I need to do with multi-table joins, so if anyone has some insight I would greatly appreciate it! :)

Options: ReplyQuote


Subject
Views
Written By
Posted
3014
January 29, 2005 07:36PM
1781
January 29, 2005 08:30PM
1886
January 30, 2005 04:46PM
Re: DELETE performance problem
2016
January 31, 2005 08:45AM


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.