On Sat, 28 Mar 2020, Artur Tarassow wrote:
Simple but very nice idea, Jack! Thanks.
However, in case one is working with multiple large tables which must be
joined, this is not very efficient since the DB needs to process everything
twice.
True.
-------------------------------------------------------
Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
-------------------------------------------------------