Function TupleDescInitEntryCollation

src/backend/access/common/tupdesc.c:761–774

* TupleDescInitEntryCollation * * Assign a nondefault collation to a previously initialized tuple descriptor * entry. */

 * entry.
 */
void
TupleDescInitEntryCollation(TupleDesc desc,
							AttrNumber attributeNumber,
							Oid collationid)
{
	/*
	 * sanity checks
	 */
	AssertArg(PointerIsValid(desc));
	AssertArg(attributeNumber >= 1);
	AssertArg(attributeNumber <= desc->natts);

	TupleDescAttr(desc, attributeNumber - 1)->attcollation = collationid;
}


/*