All we need is an easy explanation of the problem, so here it is.
I want to use CREATE FUNCTION in a block that will "swallow" errors, but this
BEGIN TRY
CREATE FUNCTION test (@ID int)
RETURNS int
AS
BEGIN
RETURN(2 * @ID)
END
END TRY
BEGIN CATCH
END CATCH
results in
Msg 156, Level 15, State 1, Line 3 Incorrect syntax near the keyword
‘FUNCTION’. Msg 137, Level 15, State 2, Line 7 Must declare the scalar
variable "@ID".
Why?
How to solve :
I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.
Method 1
Many DDL statements must either start a batch or be the only statement in a batch. So the general solution is to use dynamic SQL. EG
I want to use CREATE FUNCTION in a block that will "swallow" errors, but this
BEGIN TRY
exec('
CREATE FUNCTION test (@ID int)
RETURNS int
AS
BEGIN
RETURN(2 * @ID)
END
')
END TRY
BEGIN CATCH
END CATCH
Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂
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