Thread: unique id's and incr

unique id's and incr

From
"G.L. Grobe"
Date:
During the creation of my database, I'm doing a:
 
CREATE UNIQUE INDEX account_idx ON Accounts (account_id);
 
to add new rows to my table and keep the id's unique.
 
During runtime (accessing by JDBC), is there anyway when adding a new row to a table to know the last id entry so as to incr the next one for a new id. I was thinking there might be a way to do this w/o having to query the table for the last id and incr the id before I do another insert.
 
Any help much appreciated.

RE: unique id's and incr

From
"Dave Cramer"
Date:
Gary,
 
The most generic way to do this is to create a sequence, and then select next('sequencename') and use that to insert into the row
 
Dave
 
 -----Original Message-----
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of G.L. Grobe
Sent: July 23, 2001 8:00 PM
To: pgsql-general@postgresql.org
Subject: [GENERAL] unique id's and incr

During the creation of my database, I'm doing a:
 
CREATE UNIQUE INDEX account_idx ON Accounts (account_id);
 
to add new rows to my table and keep the id's unique.
 
During runtime (accessing by JDBC), is there anyway when adding a new row to a table to know the last id entry so as to incr the next one for a new id. I was thinking there might be a way to do this w/o having to query the table for the last id and incr the id before I do another insert.
 
Any help much appreciated.