nPath Example | Teradata Vantage - nPath Example: Checkout Paths for Purchases Over $200 - Teradata Vantage

This example finds the paths to the checkout page for purchases over $200.

Input

• aggregate_clicks, as in LAG and LEAD Expressions Example: First and Most Expensive Purchases (under nPath Symbols)

SQL Call

SELECT * FROM NPath@coprocessor (
  ON aggregate_clicks PARTITION BY sessionid ORDER BY clicktime
  USING
    Mode(nonoverlapping)
    Pattern('A*.C+.A*')
    Symbols(productprice > 200 AND pagetype='checkout' AS C, true AS A)
    Result(first(sessionid of A) AS sessionid,
           accumulate(pagetype OF ANY(A,C)) AS path,
           AVG(productprice OF ANY(A,C)) AS sum)
) AS dt;

Output

 sessionid path                                                                                                                                       sum               
 --------- ------------------------------------------------------------------------------------------------------------------------------------------ ----------------- 
         1 [home, home1, page1, home, home1, page1, home, home, home, home1, page1, checkout, home, home, home, home, home, home, home, home, home]   602.8571428571429
         5 [home, home, home, home, home1, home1, home1, page1, page1, page1, page2, page2, page2, checkout, checkout, checkout, page2, page2, page2] 363.1578947368421

Download a zip file of all examples and a SQL script file that creates their input tables.