17.10 - Achieving Maximum Benefit with COMPRESS - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Data Types and Literals

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1143-171K
Language
English (United States)
Maximum benefit is achieved when the COMPRESS phrase is applied to a column under the following conditions:
  • Enough rows contain a compressible value (for example, null, zero, blank, or constant value) in the compressed field to exceed the break-even point. For details, see Teradata Vantage™ - Database Design, B035-1094.
  • The shortened row length results in the elimination of one or more data blocks.