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foreign key error

Author

Topic

joemama
Posting Yak Master

113 Posts

Posted - 2005-04-03 : 20:43:21

in database designer i am trying to create a foreign key from userID in Users to UserID in Newsletter and i get this error...

'Users' table saved successfully
'Newsletter' table
- Unable to create relationship 'FK_Newsletter_Users'.
ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK_Newsletter_Users'. The conflict occurred in database 'rsensations', table 'Users', column 'UserID'.

any clue?

nr
SQLTeam MVY

12543 Posts

Posted - 2005-04-03 : 20:47:11

You have data in the table which doesn't have corresponding data in the referenced table.
try

select distinct n.UserID
from Newsletter n
left join Users u
on u.UserID = n.UserID
where u.UserID is null

That will give all the entries that violate the fk.

==========================================
Cursors are useful if you don't know sql.
DTS can be used in a similar way.
Beer is not cold and it isn't fizzy.

joemama
Posting Yak Master

113 Posts

Posted - 2005-04-03 : 23:46:59

that did it...thannks!

quote:
Originally posted by nr

You have data in the table which doesn't have corresponding data in the referenced table.
try

select distinct n.UserID
from Newsletter n
left join Users u
on u.UserID = n.UserID
where u.UserID is null

That will give all the entries that violate the fk.

==========================================
Cursors are useful if you don't know sql.
DTS can be used in a similar way.
Beer is not cold and it isn't fizzy.

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