Re: Finding Max Value in a Row

On Fri, May 11, 2012 at 1:03 PM, Carlos Mennens
<carlos.mennens@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.


select max(row_name) as max_val from table;

Why not create a sequence on the current data then use currval() to
get the max value.

-wes