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Fix for select 1=1 or 2=2, select 1=1 and 2=2, and select sum(2+2).

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This commit is contained in:
Bruce Momjian
1997-12-22 05:42:25 +00:00
parent 78a055a659
commit d404f1006b
10 changed files with 69 additions and 56 deletions
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8
src/backend/optimizer/path/xfunc.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/xfunc.c,v 1.8 1997/12/11 17:36:29 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/xfunc.c,v 1.9 1997/12/22 05:41:59 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -451,7 +451,7 @@ xfunc_local_expense(LispValue clause)
(LispValue) get_funcargs(clause)));
else if (fast_not_clause(clause))
return (xfunc_local_expense(lsecond(clause)));
else if (fast_or_clause(clause))
else if (fast_or_clause(clause) || fast_and_clause(clause))
{
/* find cost of evaluating each disjunct */
for (tmpclause = lnext(clause); tmpclause != LispNil;
@ -845,7 +845,7 @@ xfunc_find_references(LispValue clause)
}
else if (fast_not_clause(clause))
return (xfunc_find_references(lsecond(clause)));
else if (fast_or_clause(clause))
else if (fast_or_clause(clause) || fast_and_clause(clause))
{
/* string together result of all operands of OR */
for (tmpclause = lnext(clause); tmpclause != LispNil;
@ -1186,7 +1186,7 @@ xfunc_fixvars(LispValue clause, /* clause being pulled up */
xfunc_fixvars(lfirst(tmpclause), rel, varno);
else if (fast_not_clause(clause))
xfunc_fixvars(lsecond(clause), rel, varno);
else if (fast_or_clause(clause))
else if (fast_or_clause(clause) || fast_and_clause(clause))
for (tmpclause = lnext(clause); tmpclause != LispNil;
tmpclause = lnext(tmpclause))
xfunc_fixvars(lfirst(tmpclause), rel, varno);