Most data that a data scientist deals with is either structured or semistructured. Nowadays, the amount of unstructured data is increasing rapidly. The PySparkSQL module is a higher-level abstraction over PySpark Core for processing structured and semistructured datasets. By using PySparkSQL, we can use SQL and HiveQL code too, which makes this module popular among database programmers and Apache Hive users. The APIs provided by PySparkSQL are optimized. PySparkSQL can read data from many file types such as CSV files, JSON files, and files from other databases.