Re: Remove redundant DISTINCT when GROUP BY already guarantees uniqueness - Mailing list pgsql-hackers

From Andrés Taylor
Subject Re: Remove redundant DISTINCT when GROUP BY already guarantees uniqueness
Date
Msg-id 178211814104.991.7333413279255303867.pgcf@coridan.postgresql.org
Whole thread
In response to Re: Remove redundant DISTINCT when GROUP BY already guarantees uniqueness  (Andres Taylor <andres@taylor.se>)
List pgsql-hackers
The following review has been posted through the commitfest application:
make installcheck-world:  not tested
Implements feature:       tested, passed
Spec compliant:           tested, failed
Documentation:            not tested

Reviewed v1. The optimization looks worthwhile, but the current patch needs a correctness fix for target-list SRFs, as
discussedon-list, plus a regression test. This seems like a contained revision. There is also a broader design question
aboutwhether this should eventually be handled through planner-level uniqueness infrastructure, as raised earlier on
thethread. Marking Waiting on Author for now. 

The new status of this patch is: Waiting on Author

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