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Allow binary-coercible cases in ri_HashCompareOp; there are some such cases

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that are not handled by find_coercion_pathway, notably composite->RECORD.
Now that 8.4 supports composites as primary keys, it's worth dealing with
this case.
This commit is contained in:
Tom Lane 2009-11-05 04:38:35 +00:00
parent 7433359347
commit 2c61405206
1 changed files with 6 additions and 4 deletions
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10
src/backend/utils/adt/ri_triggers.c
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@ -15,7 +15,7 @@
*
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/utils/adt/ri_triggers.c,v 1.113 2009/06/11 14:49:04 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/ri_triggers.c,v 1.113.2.1 2009/11/05 04:38:35 tgl Exp $
*
* ----------
*/
@ -3971,10 +3971,12 @@ ri_HashCompareOp(Oid eq_opr, Oid typeid)
{
/*
* The declared input type of the eq_opr might be a
* polymorphic type such as ANYARRAY or ANYENUM. If so,
* assume the coercion is valid; otherwise complain.
* polymorphic type such as ANYARRAY or ANYENUM, or other
* special cases such as RECORD; find_coercion_pathway
* currently doesn't subsume these special cases.
*/
if (!IsPolymorphicType(lefttype))
if (!IsPolymorphicType(lefttype) &&
!IsBinaryCoercible(typeid, lefttype))
elog(ERROR, "no conversion function from %s to %s",
format_type_be(typeid),
format_type_be(lefttype));