Function BuildTupleHashTableExt 

pub unsafe fn BuildTupleHashTableExt(
    arg_parent: *mut PlanState,
    arg_inputDesc: *mut TupleDescData,
    arg_numCols: i32,
    arg_keyColIdx: *mut i16,
    arg_eqfuncoids: *const Oid,
    arg_hashfunctions: *mut FmgrInfo,
    arg_collations: *mut Oid,
    arg_nbuckets: i64,
    arg_additionalsize: usize,
    arg_metacxt: *mut MemoryContextData,
    arg_tablecxt: *mut MemoryContextData,
    arg_tempcxt: *mut MemoryContextData,
    arg_use_variable_hash_iv: bool,
) -> *mut TupleHashTableData