Statistics Collection | Teradata Vantage - About Statistics Collection - Advanced SQL Engine - Teradata Database

Database Administration

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Published
July 2021
Language
English (United States)
Last Update
2021-07-27
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B035-1093
lifecycle
previous
Product Category
Teradata Vantageā„¢

Collecting statistics provides the Optimizer with the data demographics it needs to generate good query plans. The more accurate and up-to-date the statistics, the better the Optimizer can decide on plans and choose the fastest way to answer a query. The computed results are stored in the Data Dictionary DBC.StatsTbl for use during the optimizing phase of statement parsing. The Optimizer does not accept pragmas or hints, and bases query plans only on statistics.