16.20 - Computing MSUM When Number of Rows < width - Teradata Vantage NewSQL Engine

Teradata Vantageā„¢ SQL Functions, Expressions, and Predicates

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
created_date
March 2019
category
Programming Reference
featnum
B035-1145-162K

For data having fewer than width rows, MSUM computes the sum using all the preceding rows. MSUM returns the current sum rather than nulls when the number of rows in the sample is fewer than width.