Re: SQL query

On Fri, Feb 11, 2005 at 11:07:24 +0000,
  David Goodenough <david.goodenough@btconnect.com> wrote:
>
> I thought of using an inner select for the join, and using limit 1 to
> get just the one, and forcing the order by to give me the billing
> address by preference, but I am then dependant on the sort order
> of the particular type values I am selecting from.

You can order by boolean expressions such as type = 'billing'.
You can use that with LIMIT or DISTINCT ON to get just the address you want.