I changed the final query to
SELECT * FROM
(SELECT 1 AS t1, 2 AS t2) AS t1
LEFT JOIN (SELECT * FROM atc WHERE id = '1231222') AS t2 ON (1=1)
ON(null) never matched.
------ Original Message ------
From: "Sterpu Victor" <victor@caido.ro>
To: "David G Johnston" <david.g.johnston@gmail.com>;
pgsql-general@postgresql.org
Sent: 1/29/2015 10:22:28 PM
Subject: Re: [GENERAL] Subselect with no records results in final empty
set
>It works as you sugested, this is the syntax I used:
>SELECT * FROM
>(SELECT 1 AS t1, 2 AS t2) AS t1
>LEFT JOIN (SELECT * FROM atc WHERE id = '1231222') AS t2 ON (null)
>
>Thank you.
>
>------ Original Message ------
>From: "David G Johnston" <david.g.johnston@gmail.com>
>To: pgsql-general@postgresql.org
>Sent: 1/29/2015 10:03:38 PM
>Subject: Re: [GENERAL] Subselect with no records results in final empty
>set
>
>>Sterpu Victor wrote
>>> Hello
>>>
>>> I have this select where the last subselect will return a empty set
>>>and
>>> because of this the whole select will be empty.
>>> How can I change this syntax so I will have a row result even if the
>>> last select is empty?
>>>
>>> SELECT * FROM (SELECT 1 AS t1, 2 AS t2) as t, (SELECT 3 AS t3) as s,
>>> (SELECT * FROM atc WHERE id = '1231222' LIMIT 1 OFFSET 0) AS s3;
>>
>>Use explicit join syntax; and then pick the "LEFT [OUTER] JOIN"
>>variant.
>>
>>SELECT
>>FROM t
>>LEFT JOIN s3 ON (TRUE)
>>
>>David J.
>>
>>
>>
>>--
>>View this message in context:
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>>Sent from the PostgreSQL - general mailing list archive at Nabble.com.
>>
>>
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