Re: SQL error: function round(double precision, integer) does not exist

On Sun, Feb 27, 2005 at 03:26:07PM -0800, TJ O'Donnell wrote:

> ERROR:  function round(double precision, integer) does not exist                        ^^^^^^^^^^^^^^^^
[snip]

> The functions described at:
> http://www.postgresql.org/docs/7.4/static/functions-math.html
> show that round(numeric,int) should work ok.                 ^^^^^^^

The two-argument form of round() expects the first argument to be
numeric, not double precision.  There's no implicit cast from double
precision to numeric, so you'll have to use an explicit cast:

SELECT ... round((expression)::numeric, 2) ...

-- 
Michael Fuhr
http://www.fuhr.org/~mfuhr/