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Re: Query Tuning for NOT EQUAL TO <> operator
Posted by: Rick James
Date: October 26, 2010 10:40PM

When you JOIN two tables, you usually need to say how they are connected. Without it it will take all the rows from one table TIMES all the rows from the other. This can take days. Literally.

After you have fixed that, then consider adding
INDEX(ip, uid)

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