Question

是否有直接函数来转换数据帧并分配给变量？例如下面的返回此

>>> partitionRecordCount= spark.sql("select count(*) from mydb.mytable where partition_date="yyyymmdd")
>>> partitionRecordCount.show()

+--------+
|count(1)|
+--------+
|  206157|
+--------+

我需要的是下面的

>>> partitionRecordCount
206157

我需要记录计数整数值直接在左侧的那个变量中而不是在数据帧中。请指教

Answer 1

尝试

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Answer 2

查看此答案 get value out of dataframe

因此对于您的示例，您可以将其更改为：

partitionRecordCount = partitionRecordCount.collect()[0]

如何将数据框转换为变量

2 个答案: