How to rollback a transaction in TSQL when string data is truncated?

Question

Currently I have a large import process that I'm trying to wrap inside a transaction so if anything breaks - i could rollback. The issue I have is that when the TSQL inside the trans blows up, it won't rollback when the following SQL error occurs

Msg 8152, Level 16, State 14, Line 249
String or binary data would be truncated.
The statement has been terminated.

The below wraps this import TSQL

DECLARE @error INT
SELECT @error = 0
BEGIN TRANSACTION

--** begin import TSQL

--** end import TSQL

SELECT @error = @@error 
IF @error != 0 GOTO handle_error

COMMIT

handle_error: 
IF @error != 0 
BEGIN 
ROLLBACK 
END

Answer 1

How about turning on xact_abort

set xact_abort on

Answer 2

If your on SQL 2005 you can try:

BEGIN TRANSACTION
BEGIN TRY
    --Run your Statements
    COMMIT TRANSACTION
END TRY
BEGIN CATCH
        ROLLBACK TRANSACTION
        DECLARE @Msg NVARCHAR(MAX)  
        SELECT @Msg=ERROR_MESSAGE() 
        RAISERROR('Error Occured: %s', 20, 101,@msg) WITH LOG
END CATCH

Answer 3

I would also point out that if you are receiving this error often, you need to revise the size of the column you are entering data into or adjust your cleaning process to prep the data before putting it into the prod table. In SSIS, You could also have the data that deosn't meet the standard size go to a bad data table and process the rest.