A 3-day bug hunt on a 3-person team costs up to β¬7,200 in lost engineering time. This workshop teaches you to prevent that β unit tests, data tests, and integration tests for PySpark and Databricks Lakeflow, including Spark Declarative Pipelines.
Window functions are one of another SQL features that we'll probably discover during the work with data-oriented application. They can be also used in more classical programs though.
One of previous posts in SQL category presented window functions that can be used to compute values per grouped rows. These analytics functions are also available in Apache Spark SQL.
