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  1. Preface
  2. The Transformation Language
  3. Constants
  4. Operators
  5. Variables
  6. Dates
  7. Functions

Transformation Language Reference

Transformation Language Reference

Window Functions

Window Functions

The transformation language includes a group of window functions that perform calculations on a set of rows that are related to the current row. The functions calculate a single return value for every input row. You can use window functions in mappings that run on the Spark engine.
The transformation language includes the following window functions:
  • LAG
  • LEAD
You can use window functions in Expression transformations. If you use a window function in an Expression transformation, the transformation is active.

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