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