This operator is used to perform a logical exclusion on two expressions.
result = expression1 Xor expression2
If one, and only one, of the expressions evaluates to True, result is True. However, if either expression is Null, result is also Null. The following table shows how Xor determines result when neither expression is Null.
If expression1 is |
And expression2 is |
The result is |
| True | True | False |
| True | False | True |
| False | True | True |
| False | False | False |
The Xor operator also performs a bitwise comparison of identically positioned bits in two numeric expressions and sets the corresponding bit in result. The following table shows how Xor determines the corresponding bit.
If the bit in expression1 is |
And the bit in expression2 is |
The result is |
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |