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Re: index not used when join condition added
Posted by: Rick James
Date: January 03, 2012 08:42PM

Need more details to assist in analyzing; please provide
* SHOW CREATE TABLE tbl\G -- engine, indexes
* SHOW TABLE STATUS LIKE 'tbl'\G -- sizes
* EXPLAIN SELECT ...\G -- clues of inefficiencies
* SHOW VARIABLES LIKE '%buffer%'; -- cache size
and surround them with [ code ] and [ / code ]

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Re: index not used when join condition added
January 03, 2012 08:42PM

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