PySpark Interview Questions for a Data Engineer Conclusion FAQs Share Apache Spark is a unified data analytics engine created and designed to process massive volumes of data quickly and efficiently. As PySpark expertise is increasingly sought after in the data industry, this article will provide a ...
After registering the “bus” as the table using “registerAsTable” operation, we apply the SQL queries on the “bus_table” for selecting the “P_ID”; the SQL query result will be the DataFrame. We have to apply the action to get the result. sqlcontext.sql(‘select P_ID from bus_...