getColumn
Return column by column name or column selector as DataColumn. Throws exception if requested column doesn't exist.
Properties
Strings
df.getColumn { age }df.getColumn("age")Return top-level column by column name or column selector as DataColumn or null if requested column doesn't exist.
Properties
Strings
df.getColumnOrNull { age }df.getColumnOrNull("age")Return top-level column by column name or column selector as ColumnGroup. Throws exception if requested column doesn't exist or is not a ColumnGroup.
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df.getColumnGroup { name }df.getColumnGroup("name")Return list of selected columns.
Properties
Strings
df.getColumns { age and name }df.getColumns("age", "name")