json_array_length()

Returns the number of elements in the top-level JSON array.

Signature

json_array_length ( json ) → integer

Examples

SELECT json_array_length('[1,2,3,{"f1":1,"f2":[5,6]},4]');
5

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

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