Long time MySQL user, six weeks into Postgres here.
I'm converting a PHP script that uses MySQL to use Postgres instead.
To substitue the missing MySQL functionaility with mysql_insert_id()
and auto_increment I am using code like this:
$sql = "SELECT nextval('companies_company_id_seq'::text)";
And then I do my insert with that value.
It works fine but I don't understand why it always gives me a +1 value
of what I'm expecting. For example when I have an empty table it
gives me 2 as the first nextval instead of a 1, or if I have two rows
in there already it gives me a 4. Is this by design or am I missing
something? It's not a problem I just want to know what's going on.
TIA..
--
Greg Donald
http://destiney.com/