isfinite()

Test for finite date (not +/-infinity)

Signature

isfinite ( date ) → boolean
isfinite ( timestamp ) → boolean
isfinite ( interval ) → boolean

Examples

SELECT isfinite(date '2001-02-16');
t
SELECT isfinite(timestamp 'infinity');
f
SELECT isfinite(interval '4 hours');
t

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

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