nPath Function | Teradata Vantage - 17.05 - nPath® (SQL Engine) - Teradata Database

Teradata Vantage™ - Advanced SQL Engine Analytic Functions

Advanced SQL Engine
Teradata Database
June 2020
Programming Reference

The nPath function scans a set of rows, looking for patterns that you specify. For each set of input rows that matches the pattern, nPath produces a single output row. The function provides a flexible pattern-matching capability that lets you specify complex patterns in the input data and define the values that are output for each matched input set.

How Advanced SQL Engine function nPath works

nPath is useful when your goal is to identify the paths that lead to an outcome. For example, you can use nPath to analyze:

  • Web site click data, to identify paths that lead to sales over a specified amount
  • Sensor data from industrial processes, to identify paths to poor product quality
  • Healthcare records of individual patients, to identify paths that indicate that patients are at risk of developing conditions such as heart disease or diabetes
  • Financial data for individuals, to identify paths that provide information about credit or fraud risks

The output from the nPath function can be input to other ML Engine functions or to a visualization tool such as Teradata® AppCenter.

Sankey Diagram of Advanced SQL Engine nPath Output
Sankey diagram of output of Advanced SQL Engine function nPath
nPath does not support Unicode.