Functions.CountDistinct Method
Definition
Important
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Overloads
| CountDistinct(Column, Column[]) |
Returns the number of distinct items in a group. |
| CountDistinct(String, String[]) |
Returns the number of distinct items in a group. |
CountDistinct(Column, Column[])
Returns the number of distinct items in a group.
public static Microsoft.Spark.Sql.Column CountDistinct(Microsoft.Spark.Sql.Column column, params Microsoft.Spark.Sql.Column[] columns);static member CountDistinct : Microsoft.Spark.Sql.Column * Microsoft.Spark.Sql.Column[] -> Microsoft.Spark.Sql.ColumnPublic Shared Function CountDistinct (column As Column, ParamArray columns As Column()) As ColumnParameters
- column
- Column
Column to apply
- columns
- Column[]
Additional columns to apply
Returns
Column object
Applies to
CountDistinct(String, String[])
Returns the number of distinct items in a group.
public static Microsoft.Spark.Sql.Column CountDistinct(string columnName, params string[] columnNames);static member CountDistinct : string * string[] -> Microsoft.Spark.Sql.ColumnPublic Shared Function CountDistinct (columnName As String, ParamArray columnNames As String()) As ColumnParameters
- columnName
- String
Column name
- columnNames
- String[]
Additional column names
Returns
Column object