Re: INSERT a number in a column based on other columns OLD INSERTs

Adrian Klaver wrote:
> On 06/20/2015 12:41 PM, Charles Clavadetscher wrote:
>> I just made a short test with the code provided. As Bill mentioned the
>> moment when the trigger is fired is essential.
>> I made a test with both before (worked) and after (did not work because
>> the row was already inserted and the returned new row is ignored).
>>
>> The assignment (= or :=) does not seem to play a role, but the correct
>> version is as mentioned :=
>
> Yea, I can't seem to remember this part of the docs:
>
> " Equal (=) can be used instead of PL/SQL-compliant :=."

This was discussed on -hackers a while ago:
http://www.postgresql.org/message-id/flat/52EF20B2E3209443BC37736D00C3C1380876BDC7(at)EXADV1(dot)host(dot)magwien(dot)gv(dot)at#52EF20B2E3209443BC37736D00C3C1380876BDC7@EXADV1.host.magwien.gv.at

It's a rather long and rambling thread, but what I got from it
was that "=" for assignments is something that just works by accident,
is discouraged and left alive only to avoid breaking code that uses it.

Yours,
Laurenz Albe