On Wed, Nov 4, 2009 at 2:11 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Richard Broersma <richard.broersma@gmail.com> writes:
>> Can anyone one explain why a "WITH RECURSIVE" query has the same
>> results regardless whether UNION or UNION ALL is specified?
>
> Well, if the rows are all different anyway, UNION isn't going to
> eliminate any ...
Okay thanks. I see that I need to spend more time with the on-line docs.
--
Regards,
Richard Broersma Jr.
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