Re: serial type vs. sequences

Joshua D. Drake wrote:

> You are accurate.
>
> Suchandra Thapa wrote:
>
>>I was wondering if there was a reliable method to get the last id
>>inserted into a serial column in a table. I believe previous
>>recommendations given were to use a sequence, have your app get the
>>nextval for the sequence and then use that in the insert. I was
>>wondering if things had changed or if that is still the recommended
>>method.

If you don't need the value itself in your application, it is safe to
use currval('seqname') in queries following the use of
nextval('seqname'). currval() returns the last value assigned in your
session and is not affected by other concurrent transactions.

Jan

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