16.10 - Example: System-Determined Sample Statistics - Teradata Database

Teradata Database Administration

Product
Teradata Database
Release Number
16.10
Release Date
April 2018
Content Type
Administration
Publication ID
B035-1093-161K
Language
English (United States)

The following requests system-determined sample statistics on the o_orderdatetime column. The default sample percentage in DBS Control determines the number of rows sampled. Teradata collects full statistics and remembers the sample option. Teradata considers downgrading the sample percentage after the system captures enough history and the column is identified as eligible for sample statistics:

COLLECT STATISTICS
             USING SYSTEM SAMPLE
            COLUMN o_orderdatetime
                ON orders;