Re: Hanging on copying to tmp table
Hi Rick,
Thank you for your reply.
The explain is the same when everything runs smoothly.
I am not able to recreate the issue and force the problem, it happens sporadically.
The issue is also there, if I do not use SQL_CACHE, I added SQL_CACHE to try to prevent the problem.
I tried to add the use index part, but it trippled the execution time of the query. Which is not intentional, as it is running on a webpage.
It does not happen every day, but lately it has occured quite a lot.
The server has 12 GB of memory, quad core cpu and so on.
The memory usage of MySQL is mostly around 20%.
Regards,
Brian
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