Bitwise XOR.
SELECT 1 ^ 1;
0
SELECT 1 ^ 0;
1
SELECT 11 ^ 3;
8
SELECT HEX(_binary X'FEDC' ^ X'1111');
'EFCD'
The result type depends on whether the arguments are evaluated as binary strings or numbers:
SELECT 1 ^ 1;
0
SELECT 1 ^ 0;
1
SELECT 11 ^ 3;
8
SELECT HEX(_binary X'FEDC' ^ X'1111');
'EFCD'