Hi, I am not sure that I understand well what you want... Have you several columns in the same table of type TIMESTAMP and you want the max of all of them? Same thing for the length of string columns? Michel SALAIS -----Message d'origine----- De : sbob <sbob@xxxxxxxxxxxxxxxxxxxxx> Envoyé : mercredi 2 juin 2021 19:05 À : pgsql-admin@xxxxxxxxxxxxxxxxxxxx Objet : column max length / max timestamps from system tables Hi all; we need to pull the max timestamp for a set of columns and the max string length for another set of columns. Can I get this from system tables? If so, how up to date would it be? Thanks in advance