| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | BERTRAND Joël <joel(dot)bertrand(at)systella(dot)fr> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: "=" or ":=" ? |
| Date: | 2008-02-28 19:48:10 |
| Message-ID: | 1204228090.16886.50.camel@dogma.ljc.laika.com |
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| Lists: | pgsql-general |
On Thu, 2008-02-28 at 20:11 +0100, BERTRAND Joël wrote:
> Tom Lane wrote:
> > =?ISO-8859-1?Q?BERTRAND_Jo=EBl?= <joel(dot)bertrand(at)systella(dot)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
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