On Sat, Jul 10, 2004 at 09:18:28PM -0700, elein wrote: > The new plperl returns sets by having > the function return an array. > > This requires that the entire array be > built before anything is returned. > > It seems to me that that does not scale > very well. The technique of RETURN NEXT; > scales much better.
I think RETURN NEXT does the same thing anyway ... they just store tuples in a Tuplestore and then the whole thing is returned. So the function actually doesn't return until the whole function is done. The set-returning-function infraestructure actually has a mode on which you can return one tuple per call, but PL/pgSQL uses only the other mode, materializing the whole set before return. -- Alvaro Herrera (<alvherre[a]dcc.uchile.cl>) "El conflicto es el camino real hacia la unión" ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match