15.10 - INTERVAL HOUR 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 HOUR value in an expression.

where:

 

Syntax element …

Specifies …

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.

Note: Only digits within the apostrophes are parsed and converted to numeric. For example, '1.05' is treated as '105'.

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.

INTERVAL HOUR

For details on the INTERVAL HOUR type, see “INTERVAL HOUR Data Type” on page 166.

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