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Onder Kalaci 74f0dd0c25 Do not execute subplans multiple times with cursors 
Before this commit, we let AdaptiveExecutorPreExecutorRun()
to be effective multiple times on every FETCH on cursors.
That does not affect the correctness of the query results,
but adds significant overhead.

(cherry picked from commit c433c66f2b)
 		2020-12-01 11:07:12 +03:00
..
backend Do not execute subplans multiple times with cursors 2020-12-01 11:07:12 +03:00
include Do not execute subplans multiple times with cursors 2020-12-01 11:07:12 +03:00
test Do not execute subplans multiple times with cursors 2020-12-01 11:07:12 +03:00