On Thu, 2008-02-28 at 20:11 +0100, BERTRAND Joël wrote:
> Tom Lane wrote:
> > =?ISO-8859-1?Q?BERTRAND_Jo=EBl?= <joel.bertrand@systella.fr> writes:
> >> What is the difference between "=" and ":=" ?
> >
> > None; plpgsql accepts either for assignment.
>
> Thank you for your answer. I suggest to add a note in documentation ;-)
I think that it is undocumented on purpose.
"=" in SQL is generally for testing equality, and having one operator
mean two completely different things can be confusing. Therefore, ":="
is encouraged.
Regards,
Jeff Davis