Exercise

Spark SQL Join

Sometimes it is much easier to write complex joins in SQL. In this exercise, we will start with the join keys already in the same format and precision but will use SparkSQL to do the joining.

Instructions

100 XP

Register the Dataframes as SparkSQL tables with createOrReplaceTempView, name them the df and walk_df respectively.
In the join_sql string, set the left table to df and the right table to walk_df
Call spark.sql() on the join_sql string to perform the join.

Take Hint (-30 XP)