You use SQL Server to maintain the data used by applications at your company.
You need to run two separate SQL statements.
You must guarantee that the following three things happen:
Either BOTH statements succeed or BOTH statements fail as a batch.
✑ If an error occurs on the first statement, SQL should not attempt to run the second statement.
✑ Error information should be returned to the client.
What should you do?
To ensure that both statements either succeed or fail as a batch and that error information is returned to the client, you should use a TRY...CATCH block with SET XACT_ABORT ON. SET XACT_ABORT ON ensures that if a runtime error occurs, the entire transaction is rolled back. The TRY...CATCH block captures errors and returns them to the client. Therefore, option A is the correct approach.
I think correct answer is C. Answer A doesn't have error returned to client.
Should be answer D. Answer C doesn't have commit transaction