omni_seq

Extensions

omni_seq

omnigres : Distributed integer sequences

Overview

ID	Extension	Package	Version	Category	License	Language
2964	omni_seq	omnigres	`0.1.1`	FEAT	Apache-2.0	C

Attribute	Has Binary	Has Library	Need Load	Has DDL	Relocatable	Trusted
--s-d--	No	Yes	No	Yes	no	no

Relationships

Schemas omni_seq

Relationships
Schemas	`omni_seq`
Siblings	omni omni_auth omni_aws omni_cloudevents omni_containers omni_credentials omni_email omni_http omni_httpc omni_httpd omni_id omni_json omni_kube omni_ledger omni_manifest omni_mimetypes omni_os omni_polyfill omni_python omni_regex omni_rest omni_schema omni_service omni_session omni_sql omni_sqlite omni_test omni_txn omni_types omni_var omni_vfs omni_vfs_types_v1 omni_web omni_worker omni_xml omni_yaml

Siblings

Packages

Type	Repo	Version	PG Major Compatibility	Package Pattern	Dependencies
EXT	PIGSTY	`0.1.1`	18 17 16 15 14	`omnigres`	-
RPM	PIGSTY	`0.1.1`	18 17 16 15 14	`omnigres_$v`	-
DEB	PIGSTY	`0.1.1`	18 17 16 15 14	`postgresql-$v-omnigres`	-

Linux / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	MISS	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120
el8.aarch64	MISS	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120
el9.x86_64	MISS	PIGSTY 20250507	PIGSTY 20250507	PIGSTY 20250507	PIGSTY 20250507
el9.aarch64	MISS	PIGSTY 20250507	PIGSTY 20250507	PIGSTY 20250507	PIGSTY 20250507
el10.x86_64	MISS	MISS	MISS	MISS	MISS
el10.aarch64	MISS	MISS	MISS	MISS	MISS
d12.x86_64	MISS	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120
d12.aarch64	MISS	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120
d13.x86_64	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108
d13.aarch64	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108
u22.x86_64	MISS	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120
u22.aarch64	MISS	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120	PIGSTY 20250120
u24.x86_64	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108
u24.aarch64	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108	PIGSTY 20251108

Source

Repository

docs.omnigres.org/omni_seq/id/

Source Tarball

omnigres-20251108.tar.gz

pig build pkg omnigres;		# 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 omnigres;		# install via package name, for the active PG version
pig install omni_seq;		# install by extension name, for the current active PG version

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

Create this extension with:

CREATE EXTENSION omni_seq;

Usage

omni_seq: Distributed integer sequences

The omni_seq extension provides distributed (prefixed) identifier types to work around PostgreSQL’s limitation where sequence data is not replicated in logical replication.

Types

Types follow the pattern omni_seq.id_<PREFIX_TYPE>_<ID_TYPE>. Supported base types: int16, int32, int64. When prefix and identifier types match, the shorthand omni_seq.id_int64 is available.

Create a Table with Distributed IDs

CREATE SEQUENCE seq;
CREATE TABLE t (
    id omni_seq.id_int64 PRIMARY KEY NOT NULL
       DEFAULT omni_seq.id_int64_nextval(omni_seq.system_identifier(), 'seq')
);

IDs display as PREFIX:IDENTIFIER (e.g., 7222168279780171472:1).

Functions

omni_seq.id_int64_nextval(node_id, sequence_name) – Generates the next distributed ID
omni_seq.system_identifier() – Returns the unique 64-bit system identifier from pg_control
omni_seq.id_int64_int32_make(prefix, identifier) – Constructs a distributed ID from components (useful during migrations)

Migration Example

BEGIN;
LOCK TABLE my_table;
ALTER TABLE my_table ALTER COLUMN id DROP IDENTITY IF EXISTS;
CREATE SEQUENCE my_table_id_seq;
ALTER TABLE my_table
    ALTER COLUMN id TYPE omni_seq.id_int64_int32
        USING omni_seq.id_int64_int32_make(0, id),
    ALTER COLUMN id SET DEFAULT omni_seq.id_int64_int32_nextval(
        omni_seq.system_identifier(), 'my_table_id_seq');
COMMIT;

Last updated on 2026-03-24

omni_schema omni_service