<console>:29: error: overloaded method value join with alternatives:(right: org.apache.spark.sql.Dataset[_],joinExprs: org.apache.spark.sql.Column)org.apache.spark.sql.DataFrame <and>

时间：2020-11-02 00:30:04 收藏：0 阅读：188

在scala中执行如下代码，报 join 错误！！

scala> val data = itemTotalTime.join(totalTime, "userId")

　　错误日志如下：

<console>:29: error: overloaded method value join with alternatives:
  
  (right: org.apache.spark.sql.Dataset[_],usingColumns: Seq[String])org.apache.spark.sql.DataFrame <and>
  (right: org.apache.spark.sql.Dataset[_],usingColumn: String)org.apache.spark.sql.DataFrame
 cannot be applied to (Unit, String)
           val data = itemTotalTime.join(totalTime, "userId")
                                    ^

　　技术分享图片

分析：应该是join的一边是DataFram 一边是Dataset 的原因，我把这两个 itemTotalTime、totalTime 都 .toDF 了一下就好了

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原文：https://www.cnblogs.com/singleYao/p/13912338.html

&lt;console&gt;:29: error: overloaded method value join with alternatives:(right: org.apache.spark.sql.Dataset[_],joinExprs: org.apache.spark.sql.Column)org.apache.spark.sql.DataFrame &lt;and&gt;

<console>:29: error: overloaded method value join with alternatives:(right: org.apache.spark.sql.Dataset[_],joinExprs: org.apache.spark.sql.Column)org.apache.spark.sql.DataFrame <and>