1.1 - 8.10 - nPath Results Example: FIRST, ACCUMULATE - Teradata Vantage

Teradata Vantage™ - Machine Learning Engine Analytic Function Reference

Product
Teradata Vantage
Release Number
1.1
8.10
Release Date
October 2019
Content Type
Programming Reference
Publication ID
B700-4003-079K
Language
English (United States)

Input

clicks
userid sessionid productname pagetype clicktime referrer productprice
1039 1 null home 06:59:13 Company1 100
1039 1 null home 07:00:10 Company3 300
1039 1 television checkout 07:00:12 Company3 500
1039 1 television checkout 07:00:18 Company3 10
1039 1 envelopes checkout 07:01:00 Company4 10
1039 1 null checkout 07:01:10 Company4 10

SQL Call

SELECT * FROM nPath@coprocessor (
  ON clicks PARTITION BY sessionid ORDER BY clicktime
  USING
  Mode ('nonoverlapping')
  Symbols (pagetype='home' AS H, pagetype='checkout' AS C,
           pagetype!='home' AND pagetype!='checkout' AS A)
  Pattern ('^H+.A*.C+$')
  Result (
    FIRST (sessionid OF ANY (H, A, C)) AS sessionid,
    FIRST (clicktime OF H) AS firsthome,
    FIRST (clicktime OF C) AS firstcheckout,
    ACCUMULATE (productname OF ANY (H,A,C) DELIMITER '*')
      AS products_accumulate,
    ACCUMULATE (CDISTINCT productname OF ANY (H,A,C) DELIMITER '$$')
      AS cde_dup_products,
    ACCUMULATE (DISTINCT productname OF ANY (H,A,C))
      AS de_dup_products
  )
) AS dt;

Output

sessionid firsthome firstcheckout products_accumulate cde_dup_products de_dup_products
1 06:59:13 07:00:12 [null*null*television*television*envelopes*null] [null$$television$$envelopes$$null] [null, television, envelopes]

Download a zip file of all examples and a SQL script file that creates their input tables from the attachment in the left sidebar.