Re: Can I unite 2 selects?

From: Edson Richter <edsonrichter(at)hotmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Can I unite 2 selects?
Date: 2015-01-29 19:11:02
Message-ID: BLU436-SMTP257F4EEF705F37B8565FE1ACF300@phx.gbl
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You mean union?

select 1 as t1
union
select 2 as t2
union
select 3 as t3

?

Atenciosamente,

Edson Carlos Ericksson Richter

On 29-01-2015 16:58, Sterpu Victor wrote:
> Hello
> Can I write a query where I receive a single result set from many queries?
> Something like this: SELECT (SELECT 1 AS t1, 2 AS t2), (SELECT 3 AS t3)
> I tried exactly this but the error is: "ERROR: subquery must return
> only one column"
> But I don't see why it must have only one column.
> Thank you
>
>
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