Declares an INTERVAL MONTH value in an expression.
Result type: INTERVAL MONTH Data Type
ANSI Compliance
INTERVAL MONTH literals are partly ANSI SQL:2011 compliant.
The ANSI definition places the optional sign for the interval within the apostrophes; the Teradata implementation places the optional sign outside the apostrophes.
Syntax
INTERVAL [ sign ] 'string' MONTH
Syntax Elements
- sign
- An optional minus sign to indicate a negative interval. The default is a positive interval.
- string
- One to four digits representing months. 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'.
Example: INTERVAL MONTH Literals
This example adds an interval of six months to the current system date. (For this example, assume the current system date is 1999-11-03.)
SELECT (INTERVAL '6' MONTH) + CURRENT_DATE;
Result:
( 6+Date) ----------- 2000/05/03