David G Johnston wrote:
>> Also, I think that your method is vulnerable to race conditions:
>> If somebody else increments the sequence between the INSERT and
>> "SELECT lastval()" you'd get a wrong value.
>
> Uh, no. It returns that last value issued in the same session - which is
> race-proof.
>
> http://www.postgresql.org/docs/9.3/static/functions-sequence.html
>
> Both of them are useful and in the case of inserting multiple rows you have
> to use RETURNING. Beyond though it is largely personal preference and
> ease-of-use (dealing with a set when you know a single value is all that is
> necessary can be annoying).
You are right, I mixed it up with "currval".
Yours,
Laurenz Albe
