Re: Find min and max values across two columns?

Emi Lu <emilu@encs.concordia.ca> writes:
> ERROR:  function greatest(integer, integer) does not exist
> HINT:  No function matches the given name and argument types. You may 
> need to add explicit type casts.

We added greatest/least in 8.1, but before that you can just use a
CASE expression instead, along the lines ofcase when x>y then x else y end
        regards, tom lane