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help / color / mirror / Atom feedFrom: Mark Williams <markwillimas@gmail.com>
To: 'David G. Johnston' <david.g.johnston@gmail.com>
Cc: 'Rob Sargent' <robjsargent@gmail.com>
Cc: 'pgsql-sql' <pgsql-sql@lists.postgresql.org>
Subject: RE: Select Distinct Order By Array_Position
Date: Mon, 26 Nov 2018 20:22:28 -0000
Message-ID: <005601d485c5$c1303300$43909900$@gmail.com> (raw)
In-Reply-To: <CAKFQuwa6=d3_BuGQd8sq44bvO0922VNTZGgdk8h_JTaEcpNSYQ@mail.gmail.com>
References: <004301d485bc$00347250$009d56f0$@gmail.com>
<57AC3D96-24B8-4D06-8946-AF6E0116888F@gmail.com>
<004e01d485c2$6c45cb50$44d161f0$@gmail.com>
<CAKFQuwa6=d3_BuGQd8sq44bvO0922VNTZGgdk8h_JTaEcpNSYQ@mail.gmail.com>
Many thanks. I'll mess around with what you've sent and see if I can get it working.
__
-----Original Message-----
From: David G. Johnston <david.g.johnston@gmail.com>
Sent: 26 November 2018 20:07
To: Mark Williams <markwillimas@gmail.com>
Cc: Rob Sargent <robjsargent@gmail.com>; pgsql-sql <pgsql-sql@lists.postgresql.org>
Subject: Re: Select Distinct Order By Array_Position
On Mon, Nov 26, 2018 at 12:58 PM Mark Williams <markwillimas@gmail.com> wrote:
>
> Wasn’t aware it was possible to put array_position statement in the actual select or is this a select within a select?
Easy enough to try either way
> Also, I am selecting from an ordered (randomly) subset of data and I need to return the result set in the same order so do have to output the array as part of the order by?
Not sure what the question is...
Anyway, maybe this will be helpful:
SELECT vals.*
FROM (VALUES (1::integer),(2),(3),(4),(5)) vals (v), LATERAL unnest(ARRAY[3,1,5]::integer[]) with ordinality AS spec (s, o) WHERE v = s ORDER BY o
David J.
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To: pgsql-sql@postgresql.org
Cc: markwillimas@gmail.com, david.g.johnston@gmail.com, robjsargent@gmail.com, pgsql-sql@lists.postgresql.org
Subject: RE: Select Distinct Order By Array_Position
In-Reply-To: <005601d485c5$c1303300$43909900$@gmail.com>
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