The code block shown below contains an error. The code block is intended to return a new DataFrame from DataFrame storesDF where column storeId is of the type string. Identify the error.
Code block:
storesDF.withColumn(“storeId”, cast(col(“storeId”), StringType()))
The error in the code block is that the cast() operation is a method in the Column class rather than a standalone function. Therefore, the correct usage would be to call cast() on the column itself, like storesDF.withColumn('storeId', col('storeId').cast(StringType())).
E should be the answer
It is E, no doubt about it
E is the right
https://spark.apache.org/docs/3.1.3/api/python/reference/api/pyspark.sql.Column.cast.html?highlight=cast