sql server - Raise an error manually in T-SQL to jump to BEGIN CATCH block

Question

Is it possible to raise an error in a stored procedure manually to stop execution and jump to BEGIN CATCH block? Some analog of throw new Exception() in C#.

Here is my stored procedure's body:

BEGIN TRY
BEGIN TRAN

-- do something

IF @foobar IS NULL
    -- here i want to raise an error to rollback transaction    

-- do something next

COMMIT TRAN
END TRY
BEGIN CATCH
    IF @@trancount > 0
        ROLLBACK TRAN
    END CATCH

I know one way: SELECT 1/0 But it's awful!!

question from:https://stackoverflow.com/questions/1531450/raise-an-error-manually-in-t-sql-to-jump-to-begin-catch-block

Answer 1

you can use raiserror. Read more details here

--from MSDN

BEGIN TRY
    -- RAISERROR with severity 11-19 will cause execution to 
    -- jump to the CATCH block.
    RAISERROR ('Error raised in TRY block.', -- Message text.
               16, -- Severity.
               1 -- State.
               );
END TRY
BEGIN CATCH
    DECLARE @ErrorMessage NVARCHAR(4000);
    DECLARE @ErrorSeverity INT;
    DECLARE @ErrorState INT;

    SELECT 
        @ErrorMessage = ERROR_MESSAGE(),
        @ErrorSeverity = ERROR_SEVERITY(),
        @ErrorState = ERROR_STATE();

    -- Use RAISERROR inside the CATCH block to return error
    -- information about the original error that caused
    -- execution to jump to the CATCH block.
    RAISERROR (@ErrorMessage, -- Message text.
               @ErrorSeverity, -- Severity.
               @ErrorState -- State.
               );
END CATCH;

EDIT If you are using SQL Server 2012+ you can use throw clause. Here are the details.