nPath Example 6: Find Data for Sessions that Checked 3-6 Products - Teradata Vantage

For sessions where the user checked between three and six products (exclusive), return the names of the most and least expensive products, the maximum price of the most expensive product, and the minimum price of the least expensive product.

Input

• aggregate_clicks, as in LAG and LEAD Expressions Example 2 (under nPath Symbols)

SQL Call

SELECT * FROM nPath@coprocessor (
  ON aggregate_clicks PARTITION BY sessionid ORDER BY clicktime
  USING
  Mode (nonoverlapping)
  Pattern ('H+.D*.C{3,6}.D')
  Symbols (pagetype = 'home' AS H, pagetype = 'checkout' AS C,
           pagetype <> 'home' AND pagetype <> 'checkout' AS D)
  Result (FIRST(sessionid OF C) AS sessionid,
          max_choose (productprice, productname OF C) AS
          most_expensive_product,
          MAX (productprice OF C) AS max_price,
          min_choose (productprice, productname of C) AS
          least_expensive_product,
          MIN (productprice OF C) AS min_price)
) AS dt;

Output