Hi,
I'm having a problem with the following trigger:
CREATE TRIGGER tr_FamID
ON dbo.myFirstTbl
FOR INSERT
AS
DECLARE @address2 VARCHAR (50)
DECLARE @compareFamID INT
SELECT @address2 = Address FROM inserted
SELECT @compareFamID = FamID FROM inserted
IF @address2 = ' '
BEGIN
DROP TRIGGER tr_famID
END
IF @address2 != ' '
BEGIN
DECLARE @newRec int
DECLARE @newFam int
DECLARE @newLast VARCHAR(50)
DECLARE @newFirst VARCHAR(50)
DECLARE @newAddress VARCHAR(50)
SET @newRec = (SELECT RecID FROM myFirstTbl)
SET @newFam = (SELECT FamID FROM myFirstTbl)
SET @newLast = (SELECT LastName FROM myFirstTbl)
SET @newFirst = (SELECT FirstName FROM myFirstTbl)
SET @newAddress = (SELECT Address FROM myFirstTbl)
INSERT INTO dbName.dbo.mySe condTbl (FamID, LastName,
FirstName, Address) SELECT @newFam, @newLast, @newFirst,
@newAddress FROM myFirstTbl WHERE @newFam = @compareFamID
DELETE FROM myFirstTbl WHERE FamID = @compareFamID
END
The error that's giving me is that the subquery is returning more than one value...and I guess sql doesn't like that. What I want is to INSERT all of the records on the myFirstTbl table that have the same FamID (for example...WHERE FamID = '2') into the mySecondTbl table which is located in another database separate from the myFirstTbl table. After that's done, I would like to delete the records from the myFirstTbl table. So, because of this, I think it makes sense for the subquery to return more than 1 value, but it's erroring out. The information will be entered into the database using a Visual Basic.Net application (Visual Studio 2005). I would also like to add that i'm new to triggers so if i'm doing something that I should't be doing or that could hurt performance, please tell me.
I would really appreciate your help.
3 1236 azimmer 200
Recognized Expert New Member
Hi,
...
INSERT INTO dbName.dbo.mySe condTbl (FamID, LastName,
FirstName, Address) SELECT @newFam, @newLast, @newFirst,
@newAddress FROM myFirstTbl WHERE @newFam = @compareFamID
...
The error that's giving me is that the subquery is returning more than one value...and I guess sql doesn't like that.
...
I think the problem is that the inner SELECT is a bit malformed. I believe you meant to select columns from myFirstTable in which case you column names of myFirstTable in the select list not local variables (i.e. surely no @'s in it). It also applies to the left part of the WHERE clause, like this: -
NSERT INTO dbName.dbo.mySecondTbl (FamID, LastName,
-
FirstName, Address) SELECT myFirstTbl.FamID, myFirstTbl.LastName,
-
myFirstTbl.FirstName, myFirstTbl.Address FROM myFirstTbl WHERE myFirstTbl.FamID = @compareFamID
-
It is also an interesting action to drop the trigger from within the trigger. While to my recon it is OK for the SQL Server (syntax OK), I wouldn't use it myself. (The trigger may mysteriuosly disappear with an insert... If you do want to get rid of it, do it explicitly from the application code.)
thanks for your help man, it was very helpful. You were right, I didn't needed the variables. It worked by replacing the variables with the actual column names from the table.
As for DROPING the trigger, you were right again...it was a bad idea to include it.
ck9663 2,878
Recognized Expert Specialist
thanks for your help man, it was very helpful. You were right, I didn't needed the variables. It worked by replacing the variables with the actual column names from the table.
As for DROPING the trigger, you were right again...it was a bad idea to include it.
or access the inserted table instead...trigg er runs right after the insert, but it will not immediately commit the transactions... it will insert a similar record first on the inserted table, before it actually insert it to your myFirstTable... that's the best way to access the record that you are trying to insert..
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