Math

BIT_COUNT

MySQL

Menghitung jumlah bit yang bernilai 1 dalam representasi binary dari angka.

Tipe hasil: BIGINT

Syntax

SQL

BIT_COUNT(n)

nBIGINTwajib

Angka yang akan dihitung bit-nya

SQL

1 SELECT BIT_COUNT(5) AS bits;
2 -- 5 = 101 in binary = 2 bits set

5 dalam binary adalah 101 (2 bit = 1).

Hasil

bits: 2

SQL

1 SELECT user_id,
2        permissions,
3        BIT_COUNT(permissions) AS permission_count
4 FROM users;

Menghitung jumlah permission flags yang aktif.

Hasil

(users with permission counts)

SQL

1 SELECT product_id,
2        BIT_COUNT(features) AS enabled_features
3 FROM products
4 WHERE BIT_COUNT(features) >= 5;

Produk dengan minimal 5 fitur aktif.

Hasil

(products with 5+ features)

1	SELECT BIT_COUNT(5) AS bits;
2	-- 5 = 101 in binary = 2 bits set

1	SELECT user_id,
2	permissions,
3	BIT_COUNT(permissions) AS permission_count
4	FROM users;

1	SELECT product_id,
2	BIT_COUNT(features) AS enabled_features
3	FROM products
4	WHERE BIT_COUNT(features) >= 5;