Re: Returning a table from a function, that requires multiple selects?

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: stan <stanb(at)panix(dot)com>
Cc: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: Returning a table from a function, that requires multiple selects?
Date: 2019-08-30 20:09:10
Message-ID: 97A82FDB-C59B-4B7E-8B4E-788E27E50322@gmail.com
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> On Aug 30, 2019, at 2:03 PM, stan <stanb(at)panix(dot)com> wrote:
>
> I need to encapsulate, what are basically 2 related function calls into a single
> function. The result of each of th calls is a date type.
>
> y current thinking is to return a 2 row table with the 2 dates in it. But, I seem to
> be having issues getting this to work.
>
> Is it possible for a function to return a table with results from multiple
> queries?
>
> --
> "They that would give up essential liberty for temporary safety deserve
> neither liberty nor safety."
> -- Benjamin Franklin
>
>
If the two queries are identical in returned columns you might be able to use UNION:
select f1.* from first_query as f1 UNION select f2.* from second_query as f2;

You can’t do any processing of f1 or f2.

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