From: Tom Lane <tgl@sss.pgh.pa.us>
To: Dmitry Dolgov <9erthalion6@gmail.com>
cc: Michael Paquier <michael@paquier.xyz>,
        Alvaro Herrera <alvherre@alvh.no-ip.org>,
        Marcos Pegoraro <marcos@f10.com.br>, vignesh C <vignesh21@gmail.com>,
        Sergei Kornilov <sk@zsrv.org>, Robert Haas <robertmhaas@gmail.com>,
        Zhihong Yu <zyu@yugabyte.com>, David Steele <david@pgmasters.net>,
        PostgreSQL-development <pgsql-hackers@postgresql.org>,
        Greg Stark <stark@mit.edu>,
        Pavel Trukhanov <pavel.trukhanov@gmail.com>
Subject: Re: pg_stat_statements and "IN" conditions
In-reply-to: <20230205113346.gmbf5ycnukuhnmqa@erthalion.local>
References: <20230129133219.tpuzqbyqw3ojztbd@erthalion.local> <20230202140727.g7tw7qjo43g54wcb@alvherre.pgsql> <20230202150554.dwxhvw23epcskppb@ddolgov.remote.csb> <20230204170841.xfgxoo7ymwbvu7yx@erthalion.local> <Y98GsRJoCM4RrcWp@paquier.xyz> <20230205113346.gmbf5ycnukuhnmqa@erthalion.local>
Comments: In-reply-to Dmitry Dolgov <9erthalion6@gmail.com>
	message dated "Sun, 05 Feb 2023 12:33:46 +0100"
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Date: Sun, 05 Feb 2023 11:02:32 -0500
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Dmitry Dolgov <9erthalion6@gmail.com> writes:
> I'm thinking about this in the following way: the core jumbling logic is
> responsible for deriving locations based on the input expressions; in
> the case of merging we produce less locations; pgss have to represent
> the result only using locations and has to be able to differentiate
> simple locations and locations after merging.

Uh ... why?  ISTM you're just going to elide all inside the IN,
so why do you need more than a start and stop position?

			regards, tom lane