Declares an INTERVAL HOUR TO MINUTE value in an expression.
Result type: INTERVAL HOUR TO MINUTE Data Type
ANSI Compliance
INTERVAL HOUR TO MINUTE 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' HOUR TO MINUTE
Syntax Elements
- sign
- An optional minus sign to indicate a negative interval. The default is a positive interval.
- string
- One to four digits representing the number of hours followed by a colon and two digits representing the number of minutes. Spaces and new line characters are not allowed between the apostrophes.For the digits representing the number of hours, only digits are parsed and converted to numeric. For example, '1.05' is treated as '105'.
Examples: INTERVAL HOUR TO MINUTE Literal
The following example adds an interval of 12 hours and 37 minutes to the current system time.
SELECT INTERVAL '12:37' HOUR TO MINUTE + CURRENT_TIME;
Result:
( 12:37+Current Time) --------------------- 03:34:03+00:00
In the following query, the decimal point is ignored and the result is an interval of 10 hours and 30 minutes.
SELECT INTERVAL '1.0:30' HOUR TO MINUTE;