FUNCTIONS / BINARY STRING FUNCTIONS AND OPERATORS

bit_count

Returns the number of bits set in the binary string (also known as “popcount”).

Signatures & examples

bit_count ( bytes bytea ) → bigint

Returns the number of bits set in the binary string (also known as “popcount”).

bit_count('\x1234567890'::bytea) → 15

bit_count ( bit ) → bigint

Returns the number of bits set in the bit string (also known as “popcount”).

bit_count(B'10111') → 4

Version history 1

Definition snapshot: 2026-09-14T13:14:25.684213+00:00@99e6866c · English manual source