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  1. Preface
  2. Function reference
  3. Constants
  4. Operators
  5. Dates
  6. Functions
  7. System variables
  8. Datatype reference

Function Reference

Function Reference

Window functions

Window functions

In advanced mode, 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.
The transformation language provides the following window functions:
  • LAG
  • LEAD
You can use window functions in an Expression transformation after you configure the window properties. If you configure window properties, you can also use the aggregate functions as window functions. As window functions, the aggregate functions do not group rows into a single output row but return an output value for each individual row.

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