getColumn
Edit page Last modified: 14 January 2025Return column by column name or column selector as DataColumn. Throws exception if requested column doesn't exist.
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df.getColumn { age }val age by column<Int>()
df.getColumn { age }df.getColumn("age")getColumnOrNull
Return top-level column by column name or column selector as DataColumn or null if requested column doesn't exist.
Properties
Accessors
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df.getColumnOrNull { age }val age by column<Int>()
df.getColumnOrNull(age)df.getColumnOrNull("age")getColumnGroup
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 }val name by columnGroup()
df.getColumnGroup(name)df.getColumnGroup("name")getColumns
Return list of selected columns.
Properties
Accessors
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df.getColumns { age and name }val age by column<Int>()
val name by columnGroup()
df.getColumns { age and name }df.getColumns("age", "name")