Re: Last ID

On Fri, 2 Mar 2001, Catalin CIOCOIU wrote:

> How can I get Last ID inserted ???
> The problem is for a multiuser(symultans) database. Exist a statment SQL
> witch get the last id inserted for a session ?

currval('<seq name>') is the way to get the value that was last inserted
into the database.  However, there is no guarantee, in a multiuser
environment, that the value you got was the value you actually used.  You
can also user last_value in an SQL statement, but you still have the
problem of having multiple backends generating sequence values.

A more reliable way is to explicitly call nextval('<seq name>') and use
the value returned to insert into the database.

Please see the CREATE SEQUENCE documentation at
http://www.postgresql.org/users-lounge/docs/7.0/user/sql-createsequence.htm

-- Brett
                                     http://www.chapelperilous.net/~bmccoy/
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