Export (0) Print
Expand All
Expand Minimize

Collapse Showplan Operator

The Collapse operator optimizes update processing. When an update is performed, it can be split (using the Split operator) into a delete and an insert. The Argument column contains a GROUP BY:() clause that specifies a list of key columns. If the query processor encounters adjacent rows that delete and insert the same key values, it replaces these separate operations with a single more efficient update operation.

Collapse is a logical and physical operator.

Collapse operator icon Graphical execution plan icon

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft