17.10 - INTERVAL DAY TO HOUR Literals - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Data Types and Literals

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1143-171K
Language
English (United States)

Declares an INTERVAL DAY TO HOUR value in an expression.

Result type: INTERVAL DAY TO HOUR Data Type

ANSI Compliance

INTERVAL DAY TO 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.

Syntax

INTERVAL [ sign ] 'string' DAY TO HOUR

Syntax Elements

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 days followed by a pad character and two digits representing the number of hours. Besides the pad character, no other spaces or new line characters are allowed between the apostrophes.
For the digits representing the number of days, only digits are parsed and converted to numeric. For example, '1.05' is treated as '105'.

Examples: INTERVAL DAY TO HOUR Literal

The following example adds an interval of 1 day and 12 hours to the current system timestamp.

SELECT INTERVAL '1 12' DAY TO HOUR + CURRENT_TIMESTAMP;

       ( 1 12+Current TimeStamp)
--------------------------------
1999-11-05 02:32:19.770000+00:00

In the following query, the decimal point is ignored and the result is an interval of 10 days and 10 hours.

SELECT INTERVAL '1.0 10' DAY TO HOUR;