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Allow binary-coercible cases in ri_HashCompareOp; there are some such cases
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.
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@ -15,7 +15,7 @@
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*
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* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/backend/utils/adt/ri_triggers.c,v 1.113 2009/06/11 14:49:04 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/ri_triggers.c,v 1.113.2.1 2009/11/05 04:38:35 tgl Exp $
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*
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* ----------
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*/
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@ -3971,10 +3971,12 @@ ri_HashCompareOp(Oid eq_opr, Oid typeid)
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{
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/*
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* The declared input type of the eq_opr might be a
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* polymorphic type such as ANYARRAY or ANYENUM. If so,
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* assume the coercion is valid; otherwise complain.
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* polymorphic type such as ANYARRAY or ANYENUM, or other
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* special cases such as RECORD; find_coercion_pathway
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* currently doesn't subsume these special cases.
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*/
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if (!IsPolymorphicType(lefttype))
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if (!IsPolymorphicType(lefttype) &&
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!IsBinaryCoercible(typeid, lefttype))
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elog(ERROR, "no conversion function from %s to %s",
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format_type_be(typeid),
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format_type_be(lefttype));
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