UnaryOperator
Overview
The UnaryOperator enumeration denotes the unary operator applied to operand of a UnaryExpression expression. The UnaryOperator enumeration is widely used when Dynamic Where expressions are created in code.
The following table shows how UnaryOperator values are translated into human-readable expressions.
Location
- Reference: RemObjects.DataAbstract.Server.dll
- Namespace: RemObjects.DataAbstract.Server.DASQL
| Value | Description |
|---|---|
| Exists | The EXISTS operator is used to test for the existence of any record in a subquery. |
| IsNotNull | Compares the value of the operand with NOT NULL |
| IsNull | Compares the value of the operand with NULL |
| Minus | Negates the value of the operand. The operand should be of a numeric type. |
| None | - |
| Not | Logical NOT operation. |
| Plus | Adds the value of the operand. |
| Unique | The UNIQUE operator |