gcd()

Greatest common divisor (the largest positive number that divides both inputs with no remainder); returns 0 if both inputs are zero; available for integer, bigint, and numeric

Signature

gcd ( numeric_type, numeric_type ) → numeric_type

Examples

SELECT gcd(1071, 462);
21

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

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