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Call Stack Window

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The Call Stack window displays the modules on the call stack, and the data types and values of any parameters that are passed to the modules. Transact-SQL modules include stored procedures, functions, and triggers. To display the call stack, you must be in debug mode.

Task List

To access the Call Stack window

  • On the Debug menu, click Windows, and then click Call Stack.

To change the current Call Stack frame

You can use either of the following procedures to make a stack frame the current frame:

  • Right-click the stack frame, and then click Switch To Frame.

  • Double-click the stack frame.

To view the source of a frame other than the current frame

  • Right-click the stack frame, and then click Go To Source Code.

Stack Frames

Each row in the Call Stack window is called a stack frame and represents either a call from a Transact-SQL script file to a module or a call from one module to another. The bottom stack frame in the display indicates the line in the Database Engine Query Editor window that made the first call into the stack. The top row indicates the line on which the debugger paused execution, and is identified by a yellow arrow in the left margin of the window. Each intermediate row indicates the module and the line number of the source code that called the next higher stack frame.

All expressions in the Locals, Watch, and QuickWatch windows are evaluated based on the current stack frame. The Query Editor window displays the code for the current frame. By default, the current stack frame is the frame in which the Transact-SQL debugger paused execution. When you change the current stack frame to another frame, the expressions in the Locals, Watch, and QuickWatch windows are reevaluated in the context of the new frame, and the source code of the new frame is displayed in the Query Editor window.

Columns

Name
Displays information about a module on the call stack.

For the bottom row in the call stack, Name lists the Query Editor source window and line number of the first call into the stack. For the other rows, Name has the format Module(Instance.Database)(ParmList) LineNumber.

Module
Is the name of the stored procedure, function, or stored procedure that called to the next frame.

Instance.Database
Is the instance of the Database Engine and the database that is holding the module.

ParmList
Indicates the data type, name, and value for each parameter that is passed in during the call to the module.

LineNumber
For all rows except the top row, LineNumber indicates which line in the module called to the frame. For the top row, LineNumber indicates the line on which the debugger is currently focused.

Language
Displays Transact-SQL for Transact-SQL.

See Also

Transact-SQL Debugger
Transact-SQL Debugger Information
Step Through Transact-SQL Code