See SELECT CASE.

CASE IS can be used in a SELECT CASE routine where you need to use relational conditional expressions.

## Syntax

CASE IS **{= < > <= >= <> NOT} expression**

## Description

- AND (boolean) can be used to add extra conditions to a CASE IS statement evaluation.
- OR (boolean) can be used to add alternate conditions to a CASE IS statement evaluation.
- Parenthesis are allowed in CASE IS statements to clarify an evaluation.
- CASE IS > 100 uses the greater than expression.
- CASE IS <= 100 uses the less than or equal to expression.
- CASE IS <> 100 uses the not equal to expression(same as NOT 100).

**Relational Operators:**

Symbol | Condition | Example Usage |
---|---|---|

= | Equal | IF a = b THEN |

<> | NOT equal | IF a <> b THEN |

< | Less than | IF a < b THEN |

> | Greater than | IF a > b THEN |

<= | Less than or equal | IF a <= b THEN |

>= | Greater than or equal | IF a >= b THEN |