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Comprehensive View on Intervals in Apache Spark 3.2
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Overview of intervals in Apache Spark before version 3.2, and the changes that are coming in the future releases. Conformance to the ANSI SQL standard. We will discuss existing issues of interval APIs, and how the issues will be solved by new types: year-month interval and day-time interval. I will show how to use the Interval API of Spark SQL and PySpark, and how to avoid potential problems. I will demonstrate construction of intervals from external types, and saving/loading via Spark’s built-in datasources.
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