INTERVAL HOUR Literals - Teradata Vantage NewSQL Engine - 16.20

Teradata Vantageā„¢ Data Types and Literals

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1143-162K

Purpose

Declares an INTERVAL HOUR value in an expression.

Syntax



sign
An optional minus sign to indicate a negative interval. The default is a positive interval.
The sign must be outside the apostrophes that enclose string.
string
One to four digits representing the number of hours. Spaces and new line characters are not allowed between the apostrophes.
Only digits within the apostrophes are parsed and converted to numeric. For example, '1.05' is treated as '105'.

ANSI Compliance

INTERVAL HOUR literals are partly ANSI SQL:2011 compliant.

The ANSI definition places the optional sign within the apostrophes; the Teradata implementation places the optional sign outside the apostrophes.

Type

INTERVAL HOUR

For details on the INTERVAL HOUR type, see INTERVAL HOUR Data Type.

Example: INTERVAL HOUR Literal

This example subtracts an interval of 2000 hours from the current system timestamp.

SELECT CURRENT_TIMESTAMP - INTERVAL '2000' HOUR;

    (Current TimeStamp(6)- 2000)
--------------------------------
2003-01-28 09:27:08.180000+00:00