as_of_clause - Teradata Vantage - Analytics Database

SQL Data Definition Language Syntax and Examples

Deployment
VantageCloud
VantageCore
Edition
VMware
Enterprise
IntelliFlex
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
ft:locale
en-US
ft:lastEdition
2025-11-22
dita:mapPath
jco1628111346878.ditamap
dita:ditavalPath
qkf1628213546010.ditaval
dita:id
mdr1472255012272
lifecycle
latest
Product Category
Teradata Vantage™

Specifies that the view is defined beginning at a specific point in time.

For information about temporal qualifiers, see Teradata Vantage™ - Temporal Table Support, B035-1182.

calendar_function
One of the embedded services system calendar functions.
For information about the embedded services calendar functions, see Teradata Vantage™ - SQL Date and Time Functions and Expressions, B035-1211.
DATE expression
DATE AT TIME ZONE expression
A DATE or DATE AT TIME ZONE expression argument for the specified embedded services system calendar function.
You can specify a SELECT CURRENT_DATE or SELECT CURRENT_DATE AT TIME ZONE argument instead of an explicit DATE or DATE AT TIME ZONE expression argument.
TIMESTAMP expression
TIMESTAMP WITH TIME ZONE expression
A TIMESTAMP or TIMESTAMP WITH TIME ZONE expression argument for the specified embedded services system calendar function.
You can specify a SELECT CURRENT_TIMESTAMP or SELECT CURRENT_TIMESTAMP AT TIME ZONE argument instead of an explicit TIMESTAMP or TIMESTAMP WITH TIME ZONE expression argument.
system_calendar_name
An optional system calendar name used to define a different calendar than the one assigned to the current session.
For the definitions of the system calendars, see Teradata Vantage™ - Data Dictionary, B035-1092.
You do not need to specify a system calendar name for week-related specific times because, for example, the previous Monday for a specified date is the same for all of the calendars.