prefix
prefix
pg_prefix : Prefix Range module for PostgreSQL
Overview
| ID | Extension | Package | Version | Category | License | Language |
|---|---|---|---|---|---|---|
| 3500 | prefix
|
pg_prefix
|
1.2.10 |
TYPE
|
PostgreSQL
|
C
|
| Attribute | Has Binary | Has Library | Need Load | Has DDL | Relocatable | Trusted |
|---|---|---|---|---|---|---|
--s-d-r
|
No
|
Yes
|
No
|
Yes
|
yes
|
no
|
| Relationships | |
|---|---|
| See Also | semver
ltree
citext
pg_trgm
unit
pgpdf
pglite_fusion
md5hash
|
Packages
| Type | Repo | Version | PG Major Compatibility | Package Pattern | Dependencies |
|---|---|---|---|---|---|
| EXT | PGDG
|
1.2.10 |
18
17
16
15
14
|
pg_prefix |
- |
| RPM | PGDG
|
1.2.10 |
18
17
16
15
14
|
prefix_$v |
- |
| DEB | PGDG
|
1.2.10 |
18
17
16
15
14
|
postgresql-$v-prefix |
- |
| Linux / PG | PG18 | PG17 | PG16 | PG15 | PG14 |
|---|---|---|---|---|---|
el8.x86_64
|
PIGSTY 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
el8.aarch64
|
PIGSTY 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
el9.x86_64
|
PIGSTY 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
el9.aarch64
|
PIGSTY 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
el10.x86_64
|
PIGSTY 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
el10.aarch64
|
PIGSTY 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
d12.x86_64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
d12.aarch64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
d13.x86_64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
d13.aarch64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
u22.x86_64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
u22.aarch64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
u24.x86_64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
u24.aarch64
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
PGDG 1.2.10
|
Source
pig build pkg pg_prefix; # build rpmInstall
Make sure PGDG repo available:
pig repo add pgdg -u # add pgdg repo and update cacheInstall this extension with pig:
pig install pg_prefix; # install via package name, for the active PG version
pig install prefix; # install by extension name, for the current active PG version
pig install prefix -v 18; # install for PG 18
pig install prefix -v 17; # install for PG 17
pig install prefix -v 16; # install for PG 16
pig install prefix -v 15; # install for PG 15
pig install prefix -v 14; # install for PG 14Create this extension with:
CREATE EXTENSION prefix;Usage
The prefix extension provides a prefix_range data type for efficient prefix matching, particularly useful for telephony call routing.
Data Type
Create prefix_range values using the constructor or text casting:
CREATE EXTENSION prefix;
SELECT prefix_range('123'); -- 123
SELECT prefix_range('123', '4', '5'); -- 123[4-5]
SELECT '123'::prefix_range; -- 123Operators
| Operator | Description |
|---|---|
@> |
Contains (prefix contains value) |
<@ |
Is contained by |
&& |
Overlaps |
| |
Union |
& |
Intersection |
=, <>, <, >, <=, >= |
Comparison |
Examples
-- Find the longest matching prefix for a phone number
SELECT * FROM prefixes
WHERE prefix @> '0123456789'
ORDER BY length(prefix) DESC
LIMIT 1;
-- Containment check
SELECT '123'::prefix_range @> '123456'; -- true
-- Intersection
SELECT '123[4-5]' & '123[2-7]'; -- 123[4-5]
-- Union
SELECT '123' | '124'; -- 12[3-4]Index Support
Create a GiST index for efficient prefix lookups:
CREATE INDEX idx_prefix ON prefixes USING gist(prefix);The index accelerates @>, <@, &&, and = operators.
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