BERTRAND Joël wrote: > I don't understand last assignations. In pgsql documentation, ther is > written that all assignations have to be written with ":=", not with > "=". What is the difference between "=" and ":=" ? I don't find any > information about "=". It's exactly the same. := is the documented way, but = is also accepted and behaves identically. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org/