Re: How to write a crosstab which returns empty row results

Thanks, David. There's a lot of stuff i'm not familiar with in there: I
don't suppose you know of a tutorial they covers this?

On Sun, Dec 25, 2022 at 8:46 AM David G. Johnston <
david(dot)g(dot)johnston(at)gmail(dot)com> wrote:

> 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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>
> 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.
>
>