Division by zero.

Greetings.

I am wanting to order a query by a resulting ratio that's determined by the
division of two columns.  99.99% of the time, the columns will only numbers
greater than 0, but occasionally the columns will be 0, resulting in a
divide by zero error.

The behaviour I was expecting (from working with other databases) was that
if a divide by zero occured, the column would merely be NULL in the returned
set of data.  Under PostgreSQL it appears to actually abort the transaction,
and return no data.

freehost=> create table foo( bar int4, baz int4 );
CREATE
freehost=> insert into foo values ( 1, 0 );
INSERT 38390 1
freehost=> insert into foo values ( 0 , 1 );
INSERT 38391 1
freehost=> insert into foo values ( 1, 1 );
INSERT 38392 1
freehost=> select ( bar / baz ) as redpill from foo;
ERROR:  floating point exception! The last floating point operation either exceeded legal ranges or was a divide by
zero

is the current results.  What are the possibilities of this behaviour being
changed in future revisions so that the results returned would be :

redpill
-------
NULL
0
1

?

Is there a workaround for this that I'm not seeing?

Any help would be appriecated..  :)

Sincerely, Warren