17.10 - Block-Level Compression and Join Indexes - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1184-171K
Language
English (United States)

Join indexes can be compressed at the data block level or not, depending on whether they have been compressed or decompressed using the Ferret utility. For information about the Ferret utility, see Utilities.

All limits on data block sizes apply to the noncompressed size of a join index. Block compression does not raise any of these limits, nor does it enable more data to be stored in a single data block than can be stored in an noncompressed data block of the same size.