Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> writes:
> GetAttributeByNum has first parameter as HeapTupleHeader, but most functions
> use Datum and after that they call DatumGetHeapTupleHeader. The difference is
> that DatumGetHeapTupleHeader performs detoast on tuple(row type).
> Is it intention do not detoast in these functions or it is a bug?
You would certainly not want a tuple to get separately detoasted for
each attribute you pull from it. So having detoasting here would be
the wrong thing IMHO.
regards, tom lane