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Ignore Error in a store procedure and continue

Posted on 2010-08-20
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Last Modified: 2012-05-10
I have a stored procedure that insert to a table and I have creadted a primary key. I want to ignore the error Violation of Primary Key - cannot isert duplicate key.

If the record already exist then just continue with the rest of the procedure.
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Question by:tvae
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5 Comments
 
LVL 2

Expert Comment

by:aamsoh
ID: 33488471
you can handel the errors like this,


DECLARE @Error INT

-- DO Stuff
UPDATE client SET cliTypCd = (SELECT cliTypCd FROM client T WHERE T.link = @throwLink) WHERE link = @keepLink
SET @Error = @@ERROR

IF @Error <> 0 AND @Error <> 30002
BEGIN
      -- Handle Error
END
-- Else Ignore
0
 

Author Comment

by:tvae
ID: 33488642
aamsoh,

What is this step doing?
UPDATE client SET cliTypCd = (SELECT cliTypCd FROM client T WHERE T.link = @throwLink) WHERE link = @keepLink

Do i need to put replace anything in there?
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LVL 23

Accepted Solution

by:
Rajkumar Gs earned 1000 total points
ID: 33488656
Please check the attached script

Raj
-- Case #1
-- Copying bulk data from Table1 to Table2
INSERT INTO Table2
	SELECT * FROM Table1
	WHERE ID NOT IN (SELECT ID FROM Table2)
	-- AND (if any where conditions add here)

-- Case #2
-- Copying single row at a time
IF (SELECT COUNT(*) FROM Table2 WHERE ID = @ID) = 0
BEGIN
	INSERT INTO Table2 SELECT * FROM Table1 
						-- WHERE ... (any where condition add here)
END

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LVL 2

Expert Comment

by:aamsoh
ID: 33488658
actully this was only a sample. you should consider on this code:
you can use this error handel with INSERT OR UPDATE quety.


SET @Error = @@ERROR

IF @Error <> 0 AND @Error <> 30002
BEGIN
      -- Handle Error
END
-- Else Ignore
0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 33488672
If you are inserting bulk records, first script can help. It will insert only new records based on primary key.

If you are inserting single record at a time, then you can check whether any row with the primary key value you are going to insert, already exists in the table. If not insert.

Raj
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