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Deleting records in SQL database files when fields are duplicated in another file

EXPERT RESPONSE FROM: Kent Milligan

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QUESTION POSED ON: 09 October 2008
How do I delete records in File A when FieldZ and FieldY in File A match the FieldS and FieldT in File B?

You would need to code a subquery on your SQL Delete statement. Here's an example:

DELETE FROM fileA a 
WHERE EXISTS 
(SELECT 1 FROM FileB fieldZ=fieldS AND fieldY=fieldT)

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