Postgres Pro
Downloads
Home   >   mailing lists

pgsql/src/backend/optimizer/path (clausesel.c) - Mailing list pgsql-committers

From Tom Lane
Subject pgsql/src/backend/optimizer/path (clausesel.c)
Date
Msg-id 200005311538.LAA49183@hub.org
Whole thread Raw
List pgsql-committers
Tree view 
  Date: Wednesday, May 31, 2000 @ 11:38:53
Author: tgl

Update of /home/projects/pgsql/cvsroot/pgsql/src/backend/optimizer/path
     from hub.org:/home/projects/pgsql/tmp/cvs-serv49177

Modified Files:
    clausesel.c

-----------------------------  Log Message  -----------------------------

Tweak recognition of range-clause pairs so that 'var > $1 AND var < $2'
(ie, parameters instead of consts) will be treated as a range query.
We do not know the actual selectivities involved, but it seems like
a good idea to use a smaller estimate than we would use for two unrelated
inequalities.

pgsql-committers by date:

Previous
From: Peter Eisentraut - PostgreSQL
Date:
Subject: pgsql/src/backend/optimizer/geqo (Makefile geqo_main.c geqo_params.c pg_geqo.sample)
Next
From: Tom Lane
Date:
Subject: REL7_0_PATCHES pgsql/src/backend/optimizer/path (clausesel.c)