1
我有以下DF:Spark Hive - 帶窗口函數的UDFArgumentTypeException?
+------------+----------------------+-------------------+
|increment_id|base_subtotal_incl_tax| eventdate|
+------------+----------------------+-------------------+
| 1086| 14470.0000|2016-06-14 09:54:12|
| 1086| 14470.0000|2016-06-14 09:54:12|
| 1086| 14470.0000|2015-07-14 09:54:12|
| 1086| 14470.0000|2015-07-14 09:54:12|
| 1086| 14470.0000|2015-07-14 09:54:12|
| 1086| 14470.0000|2015-07-14 09:54:12|
| 1086| 1570.0000|2015-07-14 09:54:12|
| 5555| 14470.0000|2014-07-14 09:54:12|
| 5555| 14470.0000|2014-07-14 09:54:12|
| 5555| 14470.0000|2014-07-14 09:54:12|
| 5555| 14470.0000|2014-07-14 09:54:12|
+------------+----------------------+-------------------+
我想運行一個窗口功能:
WindowSpec window = Window.partitionBy(df.col("id")).orderBy(df.col("eventdate").desc());
df.select(df.col("*"),rank().over(window).alias("rank")) //error for this line
.filter("rank <= 2")
.show();
我想要得到的是最後兩個條目(最後爲最新的日期,但因爲它是由下降,前兩行)爲每個用戶下令:
+------------+----------------------+-------------------+
|increment_id|base_subtotal_incl_tax| eventdate|
+------------+----------------------+-------------------+
| 1086| 14470.0000|2016-06-14 09:54:12|
| 1086| 14470.0000|2016-06-14 09:54:12|
| 5555| 14470.0000|2014-07-14 09:54:12|
| 5555| 14470.0000|2014-07-14 09:54:12|
+------------+----------------------+-------------------+
,但我得到這個:
+------------+----------------------+-------------------+----+
|increment_id|base_subtotal_incl_tax| eventdate|rank|
+------------+----------------------+-------------------+----+
| 5555| 14470.0000|2014-07-14 09:54:12| 1|
| 5555| 14470.0000|2014-07-14 09:54:12| 1|
| 5555| 14470.0000|2014-07-14 09:54:12| 1|
| 5555| 14470.0000|2014-07-14 09:54:12| 1|
| 1086| 14470.0000|2016-06-14 09:54:12| 1|
| 1086| 14470.0000|2016-06-14 09:54:12| 1|
+------------+----------------------+-------------------+----+
我錯過了什麼?
[老] - 原來,我有一個錯誤,這是目前解決:
WindowSpec window = Window.partitionBy(df.col("id"));
df.select(df.col("*"),rank().over(window).alias("rank")) //error for this line
.filter("rank <= 2")
.show();
然而這會返回一個錯誤Exception in thread "main" org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException: One or more arguments are expected.
對於上面標有註釋的行。我錯過了什麼?這個錯誤是什麼意思?謝謝!
謝謝!我會接受你的回答,但更新了我的問題。如果你也可以幫助我,我會非常感激。 –