Archive for the ‘is null’ Category

MySQL Left Join

Июль 6th, 2011
Even if you think you know everything about LEFT JOIN, I bet you will learn something or two in this post! A reminder about “A LEFT JOIN B ON conditional_expr” The ON condition (in the expression “A LEFT JOIN B ON conditional_expr”) is used to decide how to retrieve rows from table B (Matching-Stage). If [...]
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Posted in Cool MySQL Queries, is null, left join, on

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