Example: UPDATE With a Subquery in its WHERE Clause - 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
dita:mapPath
pon1628111750298.ditamap
dita:ditavalPath
qkf1628213546010.ditaval
dita:id
esx1472246586715
lifecycle
latest
Product Category
Teradata Vantage™

The following examples perform the same UPDATE operation using either a subquery join with a derived table or a simple equality join on column_1 in table_1 and table_2.

     UPDATE table_1
     SET column_1 = 1
     WHERE column_1 IN (SELECT column_2
                        FROM table_2);

     UPDATE table_1
     SET column_1 = 1
     WHERE table_1.column_1=table_2.column_1;