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Commit45e98ee

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Remove obsolete prohibition on function name matching a column name.
ProcedureCreate formerly threw an error if the function to be createdhas one argument of composite type and the function name matches somecolumn of the composite type. This was a (very non-bulletproof) defenseagainst creating situations where f(x) and x.f are ambiguous. But wedon't really need such a defense in the wake of commitb97a346, whichallows us to deal with such situations fairly cleanly. This behavioralso created a dump-and-reload hazard, since a function might berejected if a conflicting column name had been added to the inputcomposite type later. Hence, let's just drop the check.Discussion:https://postgr.es/m/CAOW5sYa3Wp7KozCuzjOdw6PiOYPi6D=VvRybtH2S=2C0SVmRmA@mail.gmail.com
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‎src/backend/catalog/pg_proc.c‎

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Original file line numberDiff line numberDiff line change
@@ -108,7 +108,6 @@ ProcedureCreate(const char *procedureName,
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boolnulls[Natts_pg_proc];
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Datumvalues[Natts_pg_proc];
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boolreplaces[Natts_pg_proc];
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Oidrelid;
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NameDataprocname;
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TupleDesctupDesc;
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boolis_update;
@@ -254,20 +253,6 @@ ProcedureCreate(const char *procedureName,
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errmsg("unsafe use of pseudo-type \"internal\""),
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errdetail("A function returning \"internal\" must have at least one \"internal\" argument.")));
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/*
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* don't allow functions of complex types that have the same name as
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* existing attributes of the type
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*/
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if (parameterCount==1&&
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OidIsValid(parameterTypes->values[0])&&
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(relid=typeOrDomainTypeRelid(parameterTypes->values[0]))!=InvalidOid&&
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get_attnum(relid,procedureName)!=InvalidAttrNumber)
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ereport(ERROR,
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(errcode(ERRCODE_DUPLICATE_COLUMN),
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errmsg("\"%s\" is already an attribute of type %s",
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procedureName,
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format_type_be(parameterTypes->values[0]))));
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if (paramModes!=NULL)
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{
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/*

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