LOCKING Request Modifier | SQL Statements | Teradata Vantage - 17.05 - LOCKING Request Modifier - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Manipulation Language

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Release Date
January 2021
Content Type
Programming Reference
Publication ID
B035-1146-175K
Language
English (United States)

Locks a database, table, view, or row at the specified severity, overriding the default locking severity that the system places for a request. With the appropriate privileges, you can place this lock to upgrade or downgrade the default lock.

In addition to DML statements, you can also specify the LOCKING modifier with DDL statements including CREATE VIEW, REPLACE VIEW, CREATE RECURSIVE VIEW, REPLACE RECURSIVE VIEW, CREATE MACRO, and REPLACE MACRO. You can use the LOCKING modifier to override the default locking severities and prevent deadlocks.

For more information, see:
  • Teradata Vantage™ - SQL Request and Transaction Processing, B035-1142
  • Teradata® Archive/Recovery Utility Reference, B035-2412
  • Teradata Vantage™ - Database Utilities , B035-1102

ANSI Compliance

LOCKING is a Teradata extension to the ANSI SQL:2011 standard.

Other SQL dialects support similar non-ANSI standard statements with names such as LOCK TABLE.

Required Privileges

None.