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Don't try to constant-fold functions returning RECORD, since the optimizer

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isn't presently set up to pass them an expected tuple descriptor.  Bug has
been there since 7.3 but was just recently reported by Thomas Hallgren.
This commit is contained in:
Tom Lane 2005-04-14 21:44:46 +00:00
parent 536b3af7e3
commit aa4762e7c8
1 changed files with 8 additions and 1 deletions
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9
src/backend/optimizer/util/clauses.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.109 2002/09/11 14:48:54 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.109.2.1 2005/04/14 21:44:46 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -1620,6 +1620,13 @@ simplify_op_or_func(Expr *expr, List *args)
result_typeid = func->funcresulttype;
}
/*
* Can't simplify if it returns RECORD, since we can't pass an expected
* tupledesc.
*/
if (result_typeid == RECORDOID)
return NULL;
/*
* we could use func_volatile() here, but we need several fields out
* of the func tuple, so might as well just look it up once.