How to commit and rollback transaction in sql server?

Question

I have a huge script for creating tables and porting data from one server. So this sceipt basically has -

1. Create statements for tables.
2. Insert for po

Answer 1

Avoid direct references to '@@ERROR'. It's a flighty little thing that can be lost.

Declare @ErrorCode int;
... perform stuff ...
Set @ErrorCode = @@ERROR;
... other stuff ...
if @ErrorCode ......