Foreign Table Locks | CREATE FOREIGN TABLE | Teradata Vantage - 17.05 - Foreign Table Locking - 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
dita:mapPath
vnq1596660420420.ditamap
dita:ditavalPath
hoy1596145193032.ditaval

Vantage cannot issue standard database transaction locking against data in external object storage, therefore these queries behave as if the foreign table has only an access lock (as if you used the LOCKING TABLE... FOR ACCESS request modifier).

If you perform a join between a foreign table and a Vantage native table, normal transaction locking rules still apply to the Vantage table.