15.10 - Example: Recollecting Statistics Without Specifying Thresholds - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Release Number
15.10
Published
December 2015
Content Type
Programming Reference
Publication ID
B035-1144-151K
Language
English (United States)

Subsequent entry of the following request on the same table refreshes the statistics for the empno -name index, along with any other statistics previously collected for the employee table, including PARTITION statistics.

     
COLLECT STATISTICS ON employee;

The following request collects statistics on o_orderstatus for the first time without specifying a THRESHOLD option. Teradata Database collects the statistics and the system uses the SYSTEM THRESHOLD, which is the default threshold option when DBSControl parameters DefaultUserChangeThreshold, SysChangeThresholdOption, and DefaultTimeThreshold or the the cost profile constants StatsDefaultUserChangeThreshold, StatsSysChangeThresholdOption, and StatsDefaultTimeThreshold are not set.

     COLLECT STATISTICS
     COLUMN o_orderstatus
     ON orders;