| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | Mike Rowan <michael(dot)rowan3(at)gmail(dot)com> |
| Cc: | pgsql-novice novice <pgsql-novice(at)postgresql(dot)org> |
| Subject: | Re: UNION but with excused columns |
| Date: | 2018-05-28 01:42:06 |
| Message-ID: | CAKJS1f-rQVrJ6V4hBsed6ZeHBEFwi_R6shz8fvU51pGEM9GwDA@mail.gmail.com |
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| Lists: | pgsql-novice |
On 28 May 2018 at 13:36, Mike Rowan <michael(dot)rowan3(at)gmail(dot)com> wrote:
> I would like to use UNION to amalgamate two result sets, but I need to
> excuse some columns (the same columns in each set) from the matching
> requirement. The unmatched columns are the same data type, but not the same
> data.
>
> Is this possible, and if so, any clues?
Yes, just use a sub-query: e.g: SELECT a,b,c FROM (SELECT a,b,c,d FROM
t1 UNION SELECT a,b,c,d FROM t2) t;
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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