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Re: Problem with Left joins and WHERE clause
Posted by: Peter Brawley
Date: February 11, 2019 10:59AM

...a left join b on a.i=b.i... returns all rows in a attached to matching rows on i in b where they exist, otherwise rows from a with nulls for values from b. Tutorial at http://www.mysqltutorial.org/mysql-left-join.aspx

If you want only matches from the two tables. use inner join ie remove the word 'left'.

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Re: Problem with Left joins and WHERE clause
February 11, 2019 10:59AM


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