MySQL Manual | 6.3.6.1 Bit Functions

MySQL uses BIGINT (64-bit) arithmetic for bit operations, so these operators have a maximum range of 64 bits.

|

Bitwise OR

mysql> SELECT 29 | 15;
        -> 31

The result is an unsigned 64-bit integer.

&

Bitwise AND

mysql> SELECT 29 & 15;
        -> 13

The result is an unsigned 64-bit integer.

^

Bitwise XOR

mysql> SELECT 1 ^ 1;
        -> 0
mysql> SELECT 1 ^ 0;
        -> 1
mysql> SELECT 11 ^ 3;
        -> 8

The result is an unsigned 64-bit integer. XOR was added in version 4.0.2.

<<

Shifts a longlong (BIGINT) number to the left:

mysql> SELECT 1 << 2;
        -> 4

The result is an unsigned 64-bit integer.

>>

Shifts a longlong (BIGINT) number to the right:

mysql> SELECT 4 >> 2;
        -> 1

The result is an unsigned 64-bit integer.

~

Invert all bits:

mysql> SELECT 5 & ~1;
        -> 4

The result is an unsigned 64-bit integer.

BIT_COUNT(N)

Returns the number of bits that are set in the argument N:

mysql> SELECT BIT_COUNT(29);
        -> 4

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