Web Reference: When running SQL from within another programming language the results will be returned as a Dataset/DataFrame. You can also interact with the SQL interface using the command-line or over JDBC/ODBC. A Dataset is a distributed collection of data. 3 days ago · Apache Spark DataFrames are an abstraction built on top of Resilient Distributed Datasets (RDDs). Spark DataFrames and Spark SQL use a unified planning and optimization engine, allowing you to get nearly identical performance across all supported languages on Databricks (Python, SQL, Scala, and R). DataFrames (and Datasets in Scala/Java) are Spark’s higher-level, schema-aware abstractions that make ETL code simpler and enable powerful query optimizations that plain RDD code can’t easily get.
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