Re: pg_stat_statements and "IN" conditions

Nathan Bossart <nathandbossart@gmail.com>

From: Nathan Bossart <nathandbossart@gmail.com>

To: Dmitry Dolgov <9erthalion6@gmail.com>

Cc: "Gregory Stark (as CFM)" <stark.cfm@gmail.com>, David Geier <geidav.pg@gmail.com>, Sergei Kornilov <sk@zsrv.org>, Michael Paquier <michael@paquier.xyz>, Alvaro Herrera <alvherre@alvh.no-ip.org>, Marcos Pegoraro <marcos@f10.com.br>, vignesh C <vignesh21@gmail.com>, Robert Haas <robertmhaas@gmail.com>, Zhihong Yu <zyu@yugabyte.com>, David Steele <david@pgmasters.net>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Pavel Trukhanov <pavel.trukhanov@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>

Date: 2023-10-13T16:37:30Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Introduce squashing of constant lists in query jumbling
- 62d712ecfd94 18.0 landed
Make documentation builds reproducible
- b0f0a9432d0b 17.0 cited
Include values of A_Const nodes in query jumbling
- 9ba37b2cb6a1 16.0 cited
Teach planner about more monotonic window functions
- 456fa635a909 16.0 cited
Split up guc.c for better build speed and ease of maintenance.
- 0a20ff54f5e6 16.0 cited

On Tue, Jul 04, 2023 at 09:02:56PM +0200, Dmitry Dolgov wrote:
>> On Mon, Jul 03, 2023 at 09:46:11PM -0700, Nathan Bossart wrote:
>> Also, it seems counterintuitive that queries with fewer than 10
>> constants are not merged.
> 
> Why? What would be your intuition using this feature?

For the "powers" setting, I would've expected queries with 0-9 constants to
be merged.  Then 10-99, 100-999, 1000-9999, etc.  I suppose there might be
an argument for separating 0 from 1-9, too.

-- 
Nathan Bossart
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