The Transact-SQL debugger in SQL Server Management Studio enables you to find errors in Transact-SQL scripts, stored procedures, triggers, and functions by observing their run-time behavior. You can start the debugger when you are using the Database Engine Query Editor window. By using the Transact-SQL debugger, you can do the following: â€¢ Step through the Transact-SQL statements in the editor line by line, or set breakpoints to stop at specific lines. â€¢ Step into or over Transact-SQL stored procedures, functions, or triggers that are run by the code in the editor window. â€¢ Watch the values that are assigned to variables, and observe system objects such as the call stack and threads.