1.1 - 8.10 - Burst Example: TimeInterval, SplitCriteria ('proportional') - 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

SQL Call

SELECT * FROM Burst (
  ON burst_example AS InputTable PARTITION BY id ORDER BY id
  USING
  TimeColumn ('start_time_column', 'end_time_column')
  TimeInterval (86400)
  TargetColumns ('num_custs')
  StartTime ('08/01/2010')
  EndTime ('08/10/2010')
  SplitCriteria ('proportional')
  Accumulate ('id')
) AS dt ;

Output

The value assigned to each subinterval is determined by dividing the value from each row by the number of subintervals in the row. For example, the value assigned to 2010-08-06 is based on the first 3 rows of the input table: 400/5 + 500/6 + 200/4 = 80 + 83.33 + 50 = 213.33

 id num_custs          burst_start burst_end  burst_duration 
 -- ------------------ ----------- ---------- -------------- 
  1              200.0 2010-08-01  2010-08-02        86400.0
  1              200.0 2010-08-02  2010-08-03        86400.0
  1  283.3333333333333 2010-08-03  2010-08-04        86400.0
  1 133.33333333333331 2010-08-04  2010-08-05        86400.0
  1 213.33333333333331 2010-08-05  2010-08-06        86400.0
  1 213.33333333333331 2010-08-06  2010-08-07        86400.0
  1 213.33333333333331 2010-08-07  2010-08-08        86400.0
  1 163.33333333333331 2010-08-08  2010-08-09        86400.0
  1               80.0 2010-08-09  2010-08-10        86400.0

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