17.05 - Locking and Concurrency - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Manipulation Language

Advanced SQL Engine
Teradata Database
Release Number
Release Date
January 2021
Content Type
Programming Reference
Publication ID
English (United States)

A SELECT AND CONSUME operation sets a rowhash-level WRITE lock. To upgrade to an EXCLUSIVE lock, use the LOCKING request modifier. See LOCKING Request Modifier.

If the request enters a delay state, the lock is not granted until after a row is inserted into the queue table.