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Postgres FD Implementation
Commit 84ccfdf0 authored by Tom Lane's avatar Tom Lane
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Avoid a little bit of unnecessary computation in canonicalize_qual.

parent 8b332784
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Showing with 3 additions and 2 deletions
src/backend/optimizer/prep/prepqual.c
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...@@ -8,7 +8,7 @@ ...@@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.22 2000/01/28 03:22:36 tgl Exp $ * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.23 2000/02/27 19:45:44 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
...@@ -139,7 +139,8 @@ canonicalize_qual(Expr *qual, bool removeAndFlag) ...@@ -139,7 +139,8 @@ canonicalize_qual(Expr *qual, bool removeAndFlag)
* and only one relation is mentioned, and DNF is no larger than * and only one relation is mentioned, and DNF is no larger than
* the CNF representation. (Pretty shaky; can we improve on this?) * the CNF representation. (Pretty shaky; can we improve on this?)
*/ */
if (dnfok && dnfnodes <= cnfnodes && or_clause((Node *) newqual) && if (cnfok && dnfok && dnfnodes <= cnfnodes &&
or_clause((Node *) newqual) &&
NumRelids((Node *) newqual) == 1) NumRelids((Node *) newqual) == 1)
cnfok = false; cnfok = false;
/* /*
......
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