The IsKnown() function checks whether the input parameter is known and recognizable as a value or element.
It is only slightly different from HasValue() in the way that an empty text-value is a known element (it is a text), but it does not have a value.
This function is SQL compatible. For more information about SQL compatibility, see our documentation.
If the input parameter is a list or a collection (like a Concept-Set), then the IsKnown() function checks if the list has at least 1 row.
The IsUnknown() function checks the opposite of this function.
Returns true if parameter is not unknown.
Returns false if parameter is unknown.
| Name | Type | Required | Description |
|---|---|---|---|
parameter
any
Field that is checked for a value