This operator is used to perform a logical conjunction on two expressions.
result = expression1 And expression2
If both expressions evaluate to True, result is True. If either expression evaluates to False, result is False. The following table shows how result is determined.
If expression1 is |
And expression2 is |
The result is |
| True | True | True |
| True | False | False |
| True | Null | Null |
| False | True | False |
| False | False | False |
| False | Null | False |
| Null | True | Null |
| Null | False | False |
| Null | Null | Null |
The And operator also performs a bitwise comparison. The following table shows how And determines the corresponding bit in result.
If the bit in expression1 is |
And the bit in expression2 is |
The result is |
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |