Wiki / Operators / Character strings

<=(name,name)

less than or equal

Reading PostgreSQL 18.6.

Description

less than or equal

Left operand: name
Right operand: name
Result type: bool
Implementing function: namele(name,name)
Operator kind: Binary
Hash join candidate: no
Merge join candidate: no

Usage

<=(name,name) → bool

Catalog interpretation

The catalog pg_operator stores information about operators. See CREATE OPERATOR and Section 36.14 for more information.

Declared operator-family membership

Index AM	Family	Strategy	Purpose	Ordering family
B-tree	text_ops	2	search
BRIN	name_minmax_ops	2	search

Related entries

Documentation and source

Source build

Version: 18.6
Build: https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2
Source fingerprint: 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Compare versions

PostgreSQL 11 → 12: changed.

--- PostgreSQL 11
+++ PostgreSQL 12
@@ -11,7 +11,7 @@
       "strategy": "2"
     },
     {
-      "family": "name_ops",
+      "family": "text_ops",
       "left_type": "name",
       "method": "btree",
       "operator": "<=(name,name)",

Compares recorded interfaces and attributes. Source fingerprints and build metadata are excluded; an absent sample is not proof of the introduction or removal release.

Related entries

Export JSON · Back to Operators · Recorded in PostgreSQL 10 through 20; the first sample is not necessarily its introduction.