DataFrame.CrossJoin(DataFrame) 方法

定義

命名空間:

Microsoft.Spark.Sql

組件:

Microsoft.Spark.dll

套件:

Microsoft.Spark v1.0.0

明確笛卡兒聯結另一個 DataFrame 。

public Microsoft.Spark.Sql.DataFrame CrossJoin(Microsoft.Spark.Sql.DataFrame right);

member this.CrossJoin : Microsoft.Spark.Sql.DataFrame -> Microsoft.Spark.Sql.DataFrame

Public Function CrossJoin (right As DataFrame) As DataFrame

參數

right

DataFrame

聯結運算子的右側

傳回

DataFrame

DataFrame 物件

備註

笛卡兒聯結的成本很高，不需要額外的篩選準則即可向下推送。