On 2012-05-11, Carlos Mennens <carlos.menn...@gmail.com> wrote: > I have a problem in SQL I don't know how to solve and while I'm sure > there are 100+ ways to do this in ANSI SQL, I'm trying to find the > most cleanest / efficient way. I have a table called 'users' and the > field 'users_id' is listed as the PRIMARY KEY. I know I can use the > COUNT function, then I know exactly how many records are listed but I > don't know what the maximum or highest numeric value is so that I can > use the next available # for a newly inserted record. Sadly the > architect of this table didn't feel the need to create a sequence and > I don't know how to find the highest value.
If you need pecisely the next value a sequence won't get you there anyway. select max(id) from users; that's only going to be reliable if you have a single concurent database user doing inserts. > > Thank you for any assistance! > -- ⚂⚃ 100% natural -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
