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mike123
Master Smack Fu Yak Hacker
1462 Posts |
 Posted - 2002-02-28 : 23:26:17
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| I am tuning a poorly designed database that was put into production with no constraints. I have tables that need constraints however when I put them on they error out becuase there is invalid data.I am wondering how to write a query that will accomplish the following.All the messageFromID's that are in TBLMESSAGE and are not in TBLUSERDETAILS I would like to delete.Cheers Guys thx againTBLMESSAGE TBLUSERDETAILSMessageFromID UserID |
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Merkin
Funky Drop Bear Fearing SQL Dude!
4970 Posts |
Posted - 2002-03-01 : 00:18:36
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How aboutDelete From TBLMessageWHEREUserID NOT IN (Select UserID FROM TBLUserDetails) Damian |
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mike123
Master Smack Fu Yak Hacker
1462 Posts |
Posted - 2002-03-01 : 00:47:52
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| thx |
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Another question -- data integrity