||(anycompatible,anycompatiblearray)

prepend element onto front of array

Reading PostgreSQL 18.6.

Description

prepend element onto front of array

Left operand: anycompatible
Right operand: anycompatiblearray
Result type: anycompatiblearray
Implementing function: array_prepend(anycompatible,anycompatiblearray)
Operator kind: Binary
Hash join candidate: no
Merge join candidate: no

Usage

||(anycompatible,anycompatiblearray) → anycompatiblearray

English manual definition

Concatenates an element onto the front of an array (which must be empty or one-dimensional).

3 || ARRAY[4,5,6] → {3,4,5,6}

Catalog interpretation

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

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 13 → 14: added.

--- PostgreSQL 13
+++ PostgreSQL 14
@@ -1 +1,15 @@
-Not recorded in this version
+{
+  "memberships": [],
+  "operator": {
+    "commutator": "",
+    "function": "array_prepend(anycompatible,anycompatiblearray)",
+    "hash_join": "f",
+    "kind": "b",
+    "left_type": "anycompatible",
+    "merge_join": "f",
+    "negator": "",
+    "result_type": "anycompatiblearray",
+    "right_type": "anycompatiblearray",
+    "symbol": "||"
+  }
+}

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 14 through 20; the first sample is not necessarily its introduction.