17.05 - Referencing a Locked Object - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Manipulation Language

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Published
January 2021
Language
English (United States)
Last Update
2021-01-22
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The object that is locked by the LOCKING modifier does not have to be referenced in a subsequent SQL request.

A lock can be executed separately from the SQL request that it precedes. Therefore, a LOCKING modifier must reference the object on which a lock is being placed. The objects referenced in the SQL request have no effect on the execution of a LOCKING modifier.

When a LOCKING modifier references a view, the specified lock is applied to all underlying base tables. For example, if a view refers to tables t1 and t2, then a lock on that view would apply to both tables.

LOCKING DATABASE is the only way to lock a database or user.