Re: Absolute value of intervals

On Tue, Oct 27, 2009 at 11:27:17AM -0300, Joshua Berry wrote:
> I couldn't find the operator '@' for intervals

A simple SQL implementation would look like:

  CREATE FUNCTION absinterval(interval) RETURNS interval
    IMMUTABLE LANGUAGE sql AS 'SELECT greatest($1,-$1)';
  CREATE OPERATOR @ ( PROCEDURE = absinterval, RIGHTARG = interval );

or is a C version really needed?

--
  Sam  http://samason.me.uk/