16.20 - SUMMARY - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2019-05-24
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Update only object-level statistical information such as cardinality, one-AMP and all-AMPs sampling estimates, average row size, average block size, and so on.

Calculates an estimated compression ratio for the primary subtable of tables compressed manually with block-level compression. The compression ratio is also calculated implicitly when statistics are collected on a column or index. The compression information is collected for informational purposes only and is not used by the Optimizer in determining the execution plan.

If you specify SUMMARY, you cannot specify USING options, column references, or explicit COLUMN or INDEX references.

You cannot specify SUMMARY for volatile tables.