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Re: left outer join performance
Posted by: Michael Shavlovsky
Date: November 28, 2011 11:10PM

I have more information. Using EXPLAIN command before SELECT gives next info. in second case EXPLAIN tells that databse will analyze 2 rows in table b, but in first case it says that database will analyse 72805 rows in table b. Why does database use so much rows in first JOIN?

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Written By
November 28, 2011 09:58PM
Re: left outer join performance
November 28, 2011 11:10PM
November 29, 2011 09:27PM

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