Using EXPLAIN to Determine the Database Objects that a View Accesses - Analytics Database - Teradata Vantage

SQL Data Manipulation Language

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-04-05
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lifecycle
latest
Product Category
Teradata Vantage™

Explaining a request does not necessarily report the names of all the underlying database objects accessed by that request, but it does provide the names of all the base tables accessed.

To determine the objects that a particular view accesses, including any nested views, use the SHOW statement. See Teradata Vantage™ - SQL Data Definition Language Syntax and Examples, B035-1144.

For example, the following request reports the create text and containing databases for all underlying tables and views accessed by view_name.

     SHOW QUALIFIED SELECT *
     FROM view_name;

On the other hand, the following request reports only the underlying tables accessed by view_name, and not any nested views that are accessed.

     EXPLAIN SELECT *
     FROM view_name;