| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Avoid making a separate pass over the query to check for partial |
| Date: | 2016-06-26 19:55:12 |
| Message-ID: | E1bHG9A-0000QA-UN@gemulon.postgresql.org |
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| Thread: | |
| Lists: | pgsql-committers |
Avoid making a separate pass over the query to check for partializability.
It's rather silly to make a separate pass over the tlist + HAVING qual,
and a separate set of visits to the syscache, when get_agg_clause_costs
already has all the required information in hand. This nets out as less
code as well as fewer cycles.
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/f1993038a4f0ce5fbeb7b562b2acd571bf6b567b
Modified Files
--------------
src/backend/optimizer/plan/planner.c | 29 +++++----
src/backend/optimizer/util/clauses.c | 118 ++++++++++-------------------------
src/include/nodes/relation.h | 5 +-
src/include/optimizer/clauses.h | 20 ------
4 files changed, 54 insertions(+), 118 deletions(-)
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