Function LookupCollation

src/backend/parser/parse_type.c:514–529

* LookupCollation * * Look up collation by name, return OID, with support for error location. */

 * Look up collation by name, return OID, with support for error location.
 */
Oid
LookupCollation(ParseState *pstate, List *collnames, int location)
{
	Oid			colloid;
	ParseCallbackState pcbstate;

	if (pstate)
		setup_parser_errposition_callback(&pcbstate, pstate, location);

	colloid = get_collation_oid(collnames, false);

	if (pstate)
		cancel_parser_errposition_callback(&pcbstate);

	return colloid;
}

/*
 * GetColumnDefCollation