15.10 - INTERVAL YEAR TO MONTH Literals - Teradata Database

Teradata Database SQL Data Types and Literals

prodname
Teradata Database
vrm_release
15.10
category
Programming Reference
featnum
B035-1143-151K

Declares an INTERVAL YEAR TO MONTH value in an expression.

where:

 

Syntax element …

Specifies …

sign

an optional minus sign to indicate a negative interval. The default is a positive interval.

Note that the sign must be outside the apostrophes that enclose string.

string

one to four digits representing the number of years, followed by a hyphen and two digits representing the number of months. Spaces and new line characters are not allowed between the apostrophes.

Note: For the digits representing the number of years, only digits are parsed and converted to numeric. For example, '1.05' is treated as '105'.

INTERVAL YEAR TO 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.

INTERVAL YEAR TO MONTH

For details on the INTERVAL YEAR TO MONTH type, see “INTERVAL YEAR TO MONTH Data Type” on page 153.

This example adds an interval of two years and six months to the current system date. (For this example, assume the current system date is 1999-11-03.)

   SELECT CURRENT_DATE + INTERVAL '2-06' YEAR TO MONTH;
 
     ( 2-06+Date)
   --------------
       2002/05/03

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

   SELECT INTERVAL '1.0-10' YEAR TO MONTH;