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A logical operator compares two operands or expressions and produces a true or false condition. There are two types of logical operators: conditional and Boolean. Conditional operators compare two values or expressions. Boolean operators connect string, numeric, or logical expressions together to determine true-false logic. Operators may be combined to create complex operators.

| **Conditional Operators** | **=** | Equal sign |
| \\ | **<;** | Less than |
|  | **>** | Greater than |

| **Boolean Operators** | **NOT** | Boolean (logical) NOT |
|  | **~** | Tilde (logical NOT) |
|  | **AND** | Boolean AND |
|  | **OR** | Boolean OR |
|  | **XOR** | Boolean eXclusive OR |

| **Combined operators** | **<;>** | Not equal |
|  | **~=** | Not equal |
|  | **NOT =** | Not equal |
|  | **<;=** | Less than or equal to |
|  | **=<;** | Less than or equal to |
|  | **~>** | Not greater than |
|  | **NOT >** | Not greater than |
|  | **>=** | Greater than or equal to |
|  | **=>** | Greater than or equal to |
|  | **~<;** | Not less than |
|  | **NOT <;** | Not less than |

During logical evaluation, any non-zero numeric value or non-blank string value indicates a true condition, and a null (blank) string or zero numeric value indicates a false condition.

**Example:**

__**Logical Expression**__**             **__**Result**__

** A = B                          True when A is equal to B**

** A <; B                          True when A is less than B**

** A > B                          True when A is greater than B**

** A <;> B, A ~= B, A NOT = B      True when A is not equal to B**

** A ~<; B, A >= B, A NOT <; B      True when A is not less than B**

** A ~> B, A <;= B, A NOT > B      True when A is not greater than B**

** ~ A, NOT A                     True when A is null or zero**

** A AND B                        True when A is true and B is true**

** A OR B                         True when A is true, or B is true, or both are true**

** A XOR B                        True when A is true or B is true, but not both.**