Re: [GENERAL] get the previous assigned sequence value

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От Dev Elop
Тема Re: [GENERAL] get the previous assigned sequence value
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Msg-id 00e301bf4231$4a586140$1001a8c0@client
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Ответ на get the previous assigned sequence value  (Kevin Heflin <kheflin@shreve.net>)
Ответы Re: [GENERAL] get the previous assigned sequence value
Re: [GENERAL] get the previous assigned sequence value
Список pgsql-general
> >
> > After an INSERT, I want to retrieve the value of the sequence I use for
> > unique_ids
> >
...
>
> Alternatively, use the currval(mytable_id_seq) function within the same
> session immediately after the insert.
>
With this second method, you'd probably need to beware race conditions. If
another process inserts a record into mytable after you do but before you
call currval(), then you'll get the wrong value.

Not an issue if you've only got one process accessing the table - probably
is one if you have two or more.

-
  Richard Huxton


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