mysql statement with inner SELECT - how to improve performance

Posted by ernie on Stack Overflow See other posts from Stack Overflow or by ernie
Published on 2010-04-22T10:53:31Z Indexed on 2010/04/22 11:03 UTC
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$query = "SELECT 
A,B,C,  
(SELECT COUNT(*)
    FROM comments
    WHERE comments.nid = header_file.nid) 
    as my_comment_count
FROM  header_file
Where A = 'admin' "

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