array_prepend()

Prepends an element to the beginning of an array (same as the anycompatible || anycompatiblearray operator).

Signature

array_prepend ( anycompatible, anycompatiblearray ) → anycompatiblearray

Examples

SELECT array_prepend(1, ARRAY[2,3]);

{1,2,3}

Run against PostgreSQL 18.6 on 2026-09-13. This is the output we got, not the documentation’s.

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