Functions.MapKeys(Column) 方法

定義

命名空間:

Microsoft.Spark.Sql

組件:

Microsoft.Spark.dll

套件:

Microsoft.Spark v1.0.0

傳回包含地圖索引鍵的未排序陣列。

public static Microsoft.Spark.Sql.Column MapKeys(Microsoft.Spark.Sql.Column column);

static member MapKeys : Microsoft.Spark.Sql.Column -> Microsoft.Spark.Sql.Column

Public Shared Function MapKeys (column As Column) As Column

參數

column

Column

要套用的資料行

傳回

Column

Column 物件