summary(of:)
Generates a group summaries instance of the row grouping’s columns you select by name.
Declaration
func summary(of columnNames: [String]) -> any GroupSummariesParameters
- columnNames:
An array of column names.
Generates a group summaries instance of the row grouping’s columns you select by name.
func summary(of columnNames: [String]) -> any GroupSummariesAn array of column names.