15.00 - 15.10 - Benefits of Using EXPLAIN - Teradata Database

Teradata Database Introduction to Teradata

Product
Teradata Database
Release Number
15.00
15.10
Content Type
User Guide
Publication ID
B035-1091-151K
Language
English (United States)
Last Update
2018-09-25

EXPLAIN helps you to evaluate complex queries and to develop alternative, more efficient, processing strategies. You may be able to get a better plan by collecting more statistics on more columns, or by defining additional indexes. Your knowledge of the actual demographics information may allow you to identify row count estimates that seem badly wrong, and help to pinpoint areas where additional statistics would be helpful.