Creates a subset of the column by masking its elements with another untyped column.
- macOS 10.14+
- Xcode 10.0+
- Create ML
An untyped column indicating whether elements should be removed (a default value) or included (any nondefault value) in the derived column.
A new column.
Use this untyped column–based subscript to create a new column by masking a subset of the elements. The derived column will not include elements where
mask contains a default value for its underlying type, such as:
An empty string in untyped
The derived column includes elements where the masking column has any other (nondefault) value.