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
|