pg_upless

Detect Useless UPDATE

pg_upless : Detect Useless UPDATE

Overview

ID	Extension	Package	Version	Category	License	Language
5180	pg_upless	pg_upless	`0.0.3`	ADMIN	PostgreSQL	SQL

Attribute	Has Binary	Has Library	Need Load	Has DDL	Relocatable	Trusted
----dt-	No	No	No	Yes	no	yes

Relationships
Requires	plpgsql
See Also	pg_qualstats online_advisor hypopg pg_relusage index_advisor pg_stat_plans pg_hint_plan pg_stat_statements pg_track_optimizer plan_filter

Packages

Type	Repo	Version	PG Major Compatibility	Package Pattern	Dependencies
EXT	PIGSTY	`0.0.3`	18 17 16 15 14	`pg_upless`	`plpgsql`
RPM	PIGSTY	`0.0.3`	18 17 16 15 14	`pg_upless_$v`	-
DEB	PIGSTY	`0.0.3`	18 17 16 15 14	`postgresql-$v-pg-upless`	-

Linux / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
el8.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
el9.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
el9.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
el10.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
el10.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
d12.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
d12.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
d13.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
d13.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
u22.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
u22.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
u24.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
u24.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
u26.x86_64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3
u26.aarch64	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3	PIGSTY 0.0.3

Package	Version	OS	ORG	SIZE	File URL
`pg_upless_18`	`0.0.3`	el8.x86_64	pigsty	11.6 KiB	pg_upless_18-0.0.3-1PIGSTY.el8.x86_64.rpm
`pg_upless_18`	`0.0.3`	el8.aarch64	pigsty	11.6 KiB	pg_upless_18-0.0.3-1PIGSTY.el8.aarch64.rpm
`pg_upless_18`	`0.0.3`	el9.x86_64	pigsty	11.6 KiB	pg_upless_18-0.0.3-1PIGSTY.el9.x86_64.rpm
`pg_upless_18`	`0.0.3`	el9.aarch64	pigsty	11.5 KiB	pg_upless_18-0.0.3-1PIGSTY.el9.aarch64.rpm
`pg_upless_18`	`0.0.3`	el10.x86_64	pigsty	11.6 KiB	pg_upless_18-0.0.3-1PIGSTY.el10.x86_64.rpm
`pg_upless_18`	`0.0.3`	el10.aarch64	pigsty	11.6 KiB	pg_upless_18-0.0.3-1PIGSTY.el10.aarch64.rpm
`postgresql-18-pg-upless`	`0.0.3`	d12.x86_64	pigsty	5.1 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~bookworm_amd64.deb
`postgresql-18-pg-upless`	`0.0.3`	d12.aarch64	pigsty	5.1 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~bookworm_arm64.deb
`postgresql-18-pg-upless`	`0.0.3`	d13.x86_64	pigsty	5.1 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~trixie_amd64.deb
`postgresql-18-pg-upless`	`0.0.3`	d13.aarch64	pigsty	5.1 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~trixie_arm64.deb
`postgresql-18-pg-upless`	`0.0.3`	u22.x86_64	pigsty	4.9 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~jammy_amd64.deb
`postgresql-18-pg-upless`	`0.0.3`	u22.aarch64	pigsty	4.9 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~jammy_arm64.deb
`postgresql-18-pg-upless`	`0.0.3`	u24.x86_64	pigsty	4.8 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~noble_amd64.deb
`postgresql-18-pg-upless`	`0.0.3`	u24.aarch64	pigsty	4.9 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~noble_arm64.deb
`postgresql-18-pg-upless`	`0.0.3`	u26.x86_64	pigsty	4.9 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~resolute_amd64.deb
`postgresql-18-pg-upless`	`0.0.3`	u26.aarch64	pigsty	4.9 KiB	postgresql-18-pg-upless_0.0.3-1PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_upless_17`	`0.0.3`	el8.x86_64	pigsty	11.6 KiB	pg_upless_17-0.0.3-1PIGSTY.el8.x86_64.rpm
`pg_upless_17`	`0.0.3`	el8.aarch64	pigsty	11.6 KiB	pg_upless_17-0.0.3-1PIGSTY.el8.aarch64.rpm
`pg_upless_17`	`0.0.3`	el9.x86_64	pigsty	11.6 KiB	pg_upless_17-0.0.3-1PIGSTY.el9.x86_64.rpm
`pg_upless_17`	`0.0.3`	el9.aarch64	pigsty	11.5 KiB	pg_upless_17-0.0.3-1PIGSTY.el9.aarch64.rpm
`pg_upless_17`	`0.0.3`	el10.x86_64	pigsty	11.6 KiB	pg_upless_17-0.0.3-1PIGSTY.el10.x86_64.rpm
`pg_upless_17`	`0.0.3`	el10.aarch64	pigsty	11.6 KiB	pg_upless_17-0.0.3-1PIGSTY.el10.aarch64.rpm
`postgresql-17-pg-upless`	`0.0.3`	d12.x86_64	pigsty	5.1 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~bookworm_amd64.deb
`postgresql-17-pg-upless`	`0.0.3`	d12.aarch64	pigsty	5.1 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~bookworm_arm64.deb
`postgresql-17-pg-upless`	`0.0.3`	d13.x86_64	pigsty	5.1 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~trixie_amd64.deb
`postgresql-17-pg-upless`	`0.0.3`	d13.aarch64	pigsty	5.1 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~trixie_arm64.deb
`postgresql-17-pg-upless`	`0.0.3`	u22.x86_64	pigsty	4.9 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~jammy_amd64.deb
`postgresql-17-pg-upless`	`0.0.3`	u22.aarch64	pigsty	4.9 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~jammy_arm64.deb
`postgresql-17-pg-upless`	`0.0.3`	u24.x86_64	pigsty	4.9 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~noble_amd64.deb
`postgresql-17-pg-upless`	`0.0.3`	u24.aarch64	pigsty	4.9 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~noble_arm64.deb
`postgresql-17-pg-upless`	`0.0.3`	u26.x86_64	pigsty	4.9 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~resolute_amd64.deb
`postgresql-17-pg-upless`	`0.0.3`	u26.aarch64	pigsty	4.9 KiB	postgresql-17-pg-upless_0.0.3-1PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_upless_16`	`0.0.3`	el8.x86_64	pigsty	11.6 KiB	pg_upless_16-0.0.3-1PIGSTY.el8.x86_64.rpm
`pg_upless_16`	`0.0.3`	el8.aarch64	pigsty	11.6 KiB	pg_upless_16-0.0.3-1PIGSTY.el8.aarch64.rpm
`pg_upless_16`	`0.0.3`	el9.x86_64	pigsty	11.6 KiB	pg_upless_16-0.0.3-1PIGSTY.el9.x86_64.rpm
`pg_upless_16`	`0.0.3`	el9.aarch64	pigsty	11.5 KiB	pg_upless_16-0.0.3-1PIGSTY.el9.aarch64.rpm
`pg_upless_16`	`0.0.3`	el10.x86_64	pigsty	11.6 KiB	pg_upless_16-0.0.3-1PIGSTY.el10.x86_64.rpm
`pg_upless_16`	`0.0.3`	el10.aarch64	pigsty	11.6 KiB	pg_upless_16-0.0.3-1PIGSTY.el10.aarch64.rpm
`postgresql-16-pg-upless`	`0.0.3`	d12.x86_64	pigsty	5.1 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~bookworm_amd64.deb
`postgresql-16-pg-upless`	`0.0.3`	d12.aarch64	pigsty	5.1 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~bookworm_arm64.deb
`postgresql-16-pg-upless`	`0.0.3`	d13.x86_64	pigsty	5.1 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~trixie_amd64.deb
`postgresql-16-pg-upless`	`0.0.3`	d13.aarch64	pigsty	5.1 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~trixie_arm64.deb
`postgresql-16-pg-upless`	`0.0.3`	u22.x86_64	pigsty	4.9 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~jammy_amd64.deb
`postgresql-16-pg-upless`	`0.0.3`	u22.aarch64	pigsty	4.9 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~jammy_arm64.deb
`postgresql-16-pg-upless`	`0.0.3`	u24.x86_64	pigsty	4.9 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~noble_amd64.deb
`postgresql-16-pg-upless`	`0.0.3`	u24.aarch64	pigsty	4.9 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~noble_arm64.deb
`postgresql-16-pg-upless`	`0.0.3`	u26.x86_64	pigsty	4.9 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~resolute_amd64.deb
`postgresql-16-pg-upless`	`0.0.3`	u26.aarch64	pigsty	4.9 KiB	postgresql-16-pg-upless_0.0.3-1PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_upless_15`	`0.0.3`	el8.x86_64	pigsty	11.6 KiB	pg_upless_15-0.0.3-1PIGSTY.el8.x86_64.rpm
`pg_upless_15`	`0.0.3`	el8.aarch64	pigsty	11.6 KiB	pg_upless_15-0.0.3-1PIGSTY.el8.aarch64.rpm
`pg_upless_15`	`0.0.3`	el9.x86_64	pigsty	11.6 KiB	pg_upless_15-0.0.3-1PIGSTY.el9.x86_64.rpm
`pg_upless_15`	`0.0.3`	el9.aarch64	pigsty	11.5 KiB	pg_upless_15-0.0.3-1PIGSTY.el9.aarch64.rpm
`pg_upless_15`	`0.0.3`	el10.x86_64	pigsty	11.6 KiB	pg_upless_15-0.0.3-1PIGSTY.el10.x86_64.rpm
`pg_upless_15`	`0.0.3`	el10.aarch64	pigsty	11.6 KiB	pg_upless_15-0.0.3-1PIGSTY.el10.aarch64.rpm
`postgresql-15-pg-upless`	`0.0.3`	d12.x86_64	pigsty	5.1 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~bookworm_amd64.deb
`postgresql-15-pg-upless`	`0.0.3`	d12.aarch64	pigsty	5.1 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~bookworm_arm64.deb
`postgresql-15-pg-upless`	`0.0.3`	d13.x86_64	pigsty	5.1 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~trixie_amd64.deb
`postgresql-15-pg-upless`	`0.0.3`	d13.aarch64	pigsty	5.1 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~trixie_arm64.deb
`postgresql-15-pg-upless`	`0.0.3`	u22.x86_64	pigsty	4.9 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~jammy_amd64.deb
`postgresql-15-pg-upless`	`0.0.3`	u22.aarch64	pigsty	4.9 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~jammy_arm64.deb
`postgresql-15-pg-upless`	`0.0.3`	u24.x86_64	pigsty	4.9 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~noble_amd64.deb
`postgresql-15-pg-upless`	`0.0.3`	u24.aarch64	pigsty	4.9 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~noble_arm64.deb
`postgresql-15-pg-upless`	`0.0.3`	u26.x86_64	pigsty	4.9 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~resolute_amd64.deb
`postgresql-15-pg-upless`	`0.0.3`	u26.aarch64	pigsty	4.9 KiB	postgresql-15-pg-upless_0.0.3-1PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_upless_14`	`0.0.3`	el8.x86_64	pigsty	11.6 KiB	pg_upless_14-0.0.3-1PIGSTY.el8.x86_64.rpm
`pg_upless_14`	`0.0.3`	el8.aarch64	pigsty	11.6 KiB	pg_upless_14-0.0.3-1PIGSTY.el8.aarch64.rpm
`pg_upless_14`	`0.0.3`	el9.x86_64	pigsty	11.6 KiB	pg_upless_14-0.0.3-1PIGSTY.el9.x86_64.rpm
`pg_upless_14`	`0.0.3`	el9.aarch64	pigsty	11.5 KiB	pg_upless_14-0.0.3-1PIGSTY.el9.aarch64.rpm
`pg_upless_14`	`0.0.3`	el10.x86_64	pigsty	11.6 KiB	pg_upless_14-0.0.3-1PIGSTY.el10.x86_64.rpm
`pg_upless_14`	`0.0.3`	el10.aarch64	pigsty	11.6 KiB	pg_upless_14-0.0.3-1PIGSTY.el10.aarch64.rpm
`postgresql-14-pg-upless`	`0.0.3`	d12.x86_64	pigsty	5.1 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~bookworm_amd64.deb
`postgresql-14-pg-upless`	`0.0.3`	d12.aarch64	pigsty	5.1 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~bookworm_arm64.deb
`postgresql-14-pg-upless`	`0.0.3`	d13.x86_64	pigsty	5.1 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~trixie_amd64.deb
`postgresql-14-pg-upless`	`0.0.3`	d13.aarch64	pigsty	5.1 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~trixie_arm64.deb
`postgresql-14-pg-upless`	`0.0.3`	u22.x86_64	pigsty	4.9 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~jammy_amd64.deb
`postgresql-14-pg-upless`	`0.0.3`	u22.aarch64	pigsty	4.9 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~jammy_arm64.deb
`postgresql-14-pg-upless`	`0.0.3`	u24.x86_64	pigsty	4.9 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~noble_amd64.deb
`postgresql-14-pg-upless`	`0.0.3`	u24.aarch64	pigsty	4.9 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~noble_arm64.deb
`postgresql-14-pg-upless`	`0.0.3`	u26.x86_64	pigsty	4.9 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~resolute_amd64.deb
`postgresql-14-pg-upless`	`0.0.3`	u26.aarch64	pigsty	4.9 KiB	postgresql-14-pg-upless_0.0.3-1PIGSTY~resolute_arm64.deb

Source

Repository

github.com/rodo/pg_upless

Source Tarball

pg_upless-0.0.3.tar.gz

pig build pkg pg_upless;		# build rpm/deb

Install

Make sure PGDG and PIGSTY repo available:

pig repo add pgsql -u   # add both repo and update cache

Install this extension with pig:

pig install pg_upless;		# install via package name, for the active PG version

pig install pg_upless -v 18;   # install for PG 18
pig install pg_upless -v 17;   # install for PG 17
pig install pg_upless -v 16;   # install for PG 16
pig install pg_upless -v 15;   # install for PG 15
pig install pg_upless -v 14;   # install for PG 14

Create this extension with:

CREATE EXTENSION pg_upless CASCADE; -- requires plpgsql

Usage

pg_upless: Detect Useless UPDATE

pg_upless detects UPDATE statements that change no actual values (common with ORMs). It works by installing triggers on monitored tables and collecting statistics. It is intended as a diagnostic tool, not for permanent use.

Start Monitoring

-- Monitor a specific table
SELECT pg_upless_start('public', 'boats');

-- Monitor all tables in a schema
SELECT pg_upless_start('public');

Stop Monitoring

-- Stop monitoring a specific table
SELECT pg_upless_stop('public', 'boats');

-- Stop monitoring all tables in a schema
SELECT pg_upless_stop('public');

View Statistics

The extension creates two tables in the pg_upless schema:

pg_upless_stats – stores counts of total vs useless updates per table
pg_upless_start_time – records when monitoring started (for rate calculations)