16.20 - Ordered Analytical Calculations at the SQL Level - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Release Date
March 2019
Content Type
Programming Reference
Publication ID
B035-1145-162K
Language
English (United States)

Performing ordered analytical computations at the SQL level rather than through a higher-level OLAP calculation engine provides four distinct advantages.

  • Reduced programming effort.
  • Elimination of the need for external sort routines.
  • Elimination of the need to export large data sets to external tools because ordered analytical functions enable you to target the specific data for analysis within the warehouse itself by specifying conditions in the query.
  • Marked enhancement of analysis performance over the slow, single-threaded operations that external tools perform on large data sets.