Learn more about the functions ISNULL, ISUNKNOWN, IFUNKNOWN, IS A, TYPE OF, ISACTIVE, GUID.
| Function | Description |
|---|---|
ISNULL | Checks whether a value is unknown. |
ISUNKNOWN | Replaces a value if that value is unknown. |
IFUNKNOWN | Alternative notation of the ISUNKNOWN function, which increases readability especially for long expressions. |
IS A | Checks the entity type of an instance. |
TYPE OF | Determines the entity type of an instance. |
ISACTIVE | Determines if an instance of a specific entity type is currently active. |
GUID | Generates a globally unique identifier which can later be used to uniquely mark and recognize a desired element. |