Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The Union operator scans multiple inputs, outputting each row scanned and removing duplicates.
Union is a logical operator.
See Also
Tasks
How to: Display an Actual Execution Plan
Concepts
Logical and Physical Operators Reference
Displaying Execution Plans by Using the Showplan SET Options (Transact-SQL)