From: Tom Lane <tgl@sss.pgh.pa.us>
To: Bruce Momjian <bruce@momjian.us>
cc: "David G. Johnston" <david.g.johnston@gmail.com>,
        Guyren Howe <guyren@gmail.com>,
        Pg Docs <pgsql-docs@lists.postgresql.org>
Subject: Re: Please provide examples of rows from
In-reply-to: <20200920013846.GC22746@momjian.us>
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Comments: In-reply-to Bruce Momjian <bruce@momjian.us>
	message dated "Sat, 19 Sep 2020 21:38:46 -0400"
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Date: Sun, 20 Sep 2020 10:57:14 -0400
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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