Databricks Certified Associate Developer for Apache Spark
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The following code block contains an error. It's intended to return a DataFrame with a column "openDateString" that converts the UNIX epoch integer "openDate" column into a string representation using Java's SimpleDateFormat format (e.g., "Sunday, Dec 4, 2008 1:05 PM"). Identify the error in the code:
storesDF.withColumn("openDateString", from_unixtime(col("openDate"), "EEE, MMM d, yyyy h:mm a", TimestampType()))
Sample storesDF data:
storeId openDate
0 1100746394
1 1474410343
2 1116610009
3 1180035265
4 1408024997