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fixing "Copying to tmp table"
| Posted by goooh, 07-12-2009, 03:13 PM |
| I've noticed I've been getting a lot of "Copying to tmp table" and from a google search this is bad. Any idea on how I can fix this in my shared hosting environment?
Running MySQL 5.0.81 on CPanel.
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| Posted by mikkie, 07-12-2009, 10:02 PM |
| have you tried increasing values?
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| Posted by eeg3, 07-12-2009, 10:50 PM |
| You'll need to find the SQL statements that are causing the "Copying to tmp table". For example, * ORDER BY RAND() is an example of a query that causes this behavior, and the way to get around it is to find different queries or methods to replace it with.
You can find out if a query will cause it by using 'EXPLAIN' on the statement. "Copying to tmp table" is not too horrible if only a few queries cause it, but writing to disk will always be slower than most alternatives.
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