From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
---|---|
To: | David Goldsmith <d(dot)l(dot)goldsmith(at)gmail(dot)com> |
Cc: | pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: How to write a crosstab which returns empty row results |
Date: | 2022-12-25 16:45:44 |
Message-ID: | CAKFQuwaNJxUKXdPkE-F2qYA7ck58RTHUvVCqL_+bRxcnRdV-WA@mail.gmail.com |
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Thread: | |
Lists: | pgsql-general |
On Sun, Dec 25, 2022 at 12:25 AM David Goldsmith <d(dot)l(dot)goldsmith(at)gmail(dot)com>
wrote:
> (
>
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>
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> ''45ecb932-ece9-43ce-8095-54181f33419e''
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> ''b7d5e226-e036-43c2-bd27-d9ae06a87541''
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This is basically your issue - specifying the items you want as individual
items in an IN construct instead of making them into a set (in this case an
array so the set is compactified into a single value):
Something like:
WITH sids (sid_array) AS (
SELECT ARRAY[
'.........',
'........'.
etc...
]
)
SELECT usids.sid, ct.*
FROM (SELECT unnest(sid_array) AS sid FROM sids) AS usids (sid)
LEFT JOIN crosstab( format($$SELECT ... s.s_id = ANY(%L) ...$$, (SELECT
sids.sid_array::text FROM sids) ) AS ct ( pop text, YYYY text, etc... ) ON
usids.sid = ct.pop
David J.
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