Function BuildTupleHashTable

src/backend/executor/execGrouping.c:265–288

* BuildTupleHashTable is a backwards-compatibilty wrapper for * BuildTupleHashTableExt(), that allocates the hashtable's metadata in * tablecxt. Note that hashtables created this way cannot be reset leak-free * with ResetTupleHashTable(). */

 * with ResetTupleHashTable().
 */
TupleHashTable
BuildTupleHashTable(PlanState *parent,
					TupleDesc inputDesc,
					int numCols, AttrNumber *keyColIdx,
					const Oid *eqfuncoids,
					FmgrInfo *hashfunctions,
					Oid *collations,
					long nbuckets, Size additionalsize,
					MemoryContext tablecxt,
					MemoryContext tempcxt,
					bool use_variable_hash_iv)
{
	return BuildTupleHashTableExt(parent,
								  inputDesc,
								  numCols, keyColIdx,
								  eqfuncoids,
								  hashfunctions,
								  collations,
								  nbuckets, additionalsize,
								  tablecxt,
								  tablecxt,
								  tempcxt,
								  use_variable_hash_iv);
}

/*
 * Reset contents of the hashtable to be empty, preserving all the non-content