| From: | tgl(at)postgresql(dot)org (Tom Lane) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql-server/ oc/src/sgml/indexcost.sgml rc/ba ... |
| Date: | 2003-01-12 22:35:29 |
| Message-ID: | 20030112223529.DE392475CE5@postgresql.org |
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| Lists: | pgsql-committers |
CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)postgresql(dot)org 03/01/12 17:35:29
Modified files:
doc/src/sgml : indexcost.sgml
src/backend/optimizer/path: costsize.c
src/backend/optimizer/plan: initsplan.c
src/backend/optimizer/prep: prepunion.c
src/backend/optimizer/util: relnode.c
src/backend/utils/adt: selfuncs.c
src/include/nodes: relation.h
src/include/optimizer: cost.h
Log message:
Revise cost_qual_eval() to compute both startup (one-time) and per-tuple
costs for expression evaluation, not only per-tuple cost as before.
This extension is needed in order to deal realistically with hashed or
materialized sub-selects.
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