as_of_clause - Teradata VantageCloud Lake

Lake - Working with SQL
Deployment
VantageCloud
Edition
Lake
Product
Teradata VantageCloud Lake
Release Number
Published
February 2025
ft:locale
en-US
ft:lastEdition
2025-11-21
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jbe1714339405530.ditamap
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pny1626732985837.ditaval
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jbe1714339405530

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

calendar_function
One of the embedded services system calendar functions (see Calendar Functions).
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 System Calendar View.
You need not 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.