From: Tom Lane <tgl@sss.pgh.pa.us>
To: Bruce Momjian <bruce@momjian.us>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: Guyren Howe <guyren@gmail.com>
Cc: Pg Docs <pgsql-docs@lists.postgresql.org>
Subject: Re: Please provide examples of rows from
Date: Sun, 20 Sep 2020 10:57:14 -0400
Message-ID: <835988.1600613834@sss.pgh.pa.us> (raw)
In-Reply-To: <20200920013846.GC22746@momjian.us>
References: <158638264419.662.2482095087061084020@wrigleys.postgresql.org>
<20200904014618.GB13932@momjian.us>
<CAKFQuwbBDr22KJRyJQRECO_XU6cyouwz3ocn0Tv4JgG4Gm5hMQ@mail.gmail.com>
<20200920003910.GA22746@momjian.us>
<798909.1600562993@sss.pgh.pa.us>
<20200920013846.GC22746@momjian.us>
Bruce Momjian <bruce@momjian.us> writes:
> but doing this to illustrate ROWS FROM is going to be complex.
You're right that the only suitable core function is going to be
json[b]_to_recordset, but I don't see why you can't extend the
existing example for that. Something like
# select * from rows from (json_to_recordset('[{"a":1,"b":"foo"},{"a":"2","c":"bar"}]') as (x int, y text), generate_series(1,3)) as x(a,b,s) ;
a | b | s
---+-----+---
1 | foo | 1
2 | | 2
| | 3
(3 rows)
would illustrate all the principles.
regards, tom lane
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Subject: Re: Please provide examples of rows from
In-Reply-To: <835988.1600613834@sss.pgh.pa.us>
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