bit_count

description

Syntax

BIT_COUNT(Integer-type x)

Returns the exist count of one in 2’s complement represent of integer x.

Integer-type could be: TINYINT、SMALLINT、INT、BIGINT、LARGEINT

example

select "0b11111111", bit_count(-1)
--------------
+--------------+---------------+
| '0b11111111' | bit_count(-1) |
+--------------+---------------+
| 0b11111111   |             8 |
+--------------+---------------+

keywords

BITCOUNT, BIT_COUNT