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The Merge Interval operator merges multiple (potentially overlapping) intervals to produce minimal, nonoverlapping intervals that are then used to seek index entries. This operator typically appears above one or more Compute Scalar operators over Constant Scan operators, which construct the intervals (represented as columns in a row) that this operator merges.
Merge Interval is a logical and physical operator.
.gif "Merge interval operator icon")
Graphical execution plan icon
See Also
Tasks
How to: Display an Actual Execution Plan
Reference
Compute Scalar Showplan Operator
Constant Scan Showplan Operator
Concepts
Logical and Physical Operators Reference
Displaying Execution Plans by Using the Showplan SET Options (Transact-SQL)