Question

应该是一个容易回答的问题......我这样做错了吗？我可以不投多列吗？

>>> val results2 = results.select( results["HCAHPS Base Score"].cast(IntegerType).as(results["HCAHPS Base Score"]), results["HCAHPS Consistency Score"].cast(IntegerType).as(results["HCAHPS Consistency Score"]) )
File "<stdin>", line 1
val results2 = results.select( results["HCAHPS Base Score"].cast(IntegerType).as(results["HCAHPS Base Score"]), results["HCAHPS Consistency Score"].cast(IntegerType).as(results["HCAHPS Consistency Score"]) )
               ^
SyntaxError: invalid syntax

语法错误不断弹出逗号...

Answer 1

试试这个。我认为这是pySpark，因为问题标记在PySpark

下

results2 = results.select( results["HCAHPS Base Score"].cast(IntegerType()).alias("HCAHPS Base Score"), results["HCAHPS Consistency Score"].cast(IntegerType()).alias("HCAHPS Consistency Score") )

在Scala中，您可以尝试下面的内容。

val results2 = results.select( results["HCAHPS Base Score"].cast(IntegerType).as("HCAHPS Base Score"), results["HCAHPS Consistency Score"].cast(IntegerType).as("HCAHPS Consistency Score") )

铸造多列astype

1 个答案: