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Help with an SQL script

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LarryShilling
Starting Member

1 Post

Posted - 2011-08-23 : 11:51:57

I have a couple of tables that are linked in a one to many type of connection. That is, for every record in Table A there could be multiple records in Table B. I'm writing an SQL query that joins the two tables. I'm trying to select records in Table A where one of the fields in Table B is NOT EQUAL TO a value.

My problem is that as long as ONE of the joined records in Table B isn't that value, the record in Table A is selected.

Is there a WHERE EVERY clause which would exclude the record in Table A even if ONE of the records in Table B had the field with the value??

I hope that was clear.

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-08-23 : 12:01:11

you can implement it like


SELECT a.columns...
FROM TableA a
JOIN (SELECT RelatedCol
      FROM TableB
      GROUP BY RelatedCol
      HAVING SUM(CASE WHEN yourField= <your value> THEN 1 ELSE 0 END) =0)b
ON b.RelatedCol = a.RelatedCol

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SQL Server MVP
http://visakhm.blogspot.com/

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