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Old 03-15-2007, 08:46 AM
Luke Brown256 Luke Brown256 is offline
 
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Default SQL Query to select users who have NOT voted

Hi i am trying to write an SQL query that would select all users from a specific usergroup who have NOT voted in a specific poll:

Code:
SELECT vb3_user.* 
FROM vb3_user LEFT JOIN vb3_pollvote ON vb3_user.userid=vb3_pollvote.userid 
WHERE vb3_pollvote.userid IS NULL
AND vb3_pollvote.pollid = 240 
AND vb3_user.usergroupid =26
that is what i have got so far, but it returns blank results, can anyone assist with this?

Luke Brown
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  #2  
Old 03-15-2007, 08:53 AM
Marco van Herwaarden Marco van Herwaarden is offline
 
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WHERE vb3_pollvote.userid IS NULL
AND vb3_pollvote.pollid = 240

That will never be true. Either the userid is null (ie. no match) or the pollid has a value, never both at the same time.

Try:
[sql]SELECT vb3_user.*
FROM vb3_user LEFT JOIN vb3_pollvote ON (vb3_user.userid=vb3_pollvote.userid AND vb3_pollvote.pollid = 24)
WHERE vb3_pollvote.userid IS NULL
AND vb3_user.usergroupid =26[/sql]
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