Date: Mon, 8 Aug 2022 11:32:17 +0200
From: Frank Streitzig <fstreitzig@gmx.net>
To: Shaozhong SHI <shishaozhong@gmail.com>
Cc: pgsql-sql <pgsql-sql@lists.postgresql.org>
Subject: Re: select items based on 2 columns
Message-ID: <YvDYIan0yU4IpL+t@frastr-dev>
References: 
 <CA+i5JwYCPBDcenq_godJqtjApLyOeJHxo-Joova3wrAYtM6QOA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: 
 <CA+i5JwYCPBDcenq_godJqtjApLyOeJHxo-Joova3wrAYtM6QOA@mail.gmail.com>
Content-Transfer-Encoding: quoted-printable
Archived-At: 
 <https://www.postgresql.org/message-id/YvDYIan0yU4IpL%2Bt%40frastr-dev>
Precedence: bulk

Am Mon, Aug 08, 2022 at 09:24:14AM +0100 schrieb Shaozhong SHI:
> The following is the type of data:
>
> id  id_b   in    out
> 51 57     false false
> 51 42     true   false
> 51   32   false  false
> 51   76   false  true
> 51  49     true   false
>
>
> How to do the following:
>
> select id from tbl   if in is true and out is true are found?

Untested:
select t.id from tbl t where t.in and t.out;

Best regards,
Frank

>
> Regards,
>
> David