Example: Querying the Number of Weeks from the Beginning of the Business Calendar - Advanced SQL Engine - Teradata Database

If the current date is January 5, 1901, the following query returns 52 because January 5, 1901, is in week 52 since the start of the Teradata calendar on 1900-01-01:

SELECT TD_SYSFNLIB.WEEKNUMBER_OF_CALENDAR (CURRENT_DATE);

The following query returns 53 because January 5, 1901, is in week 53 since the start of the COMPATIBLE calendar on 1900-01-01:

SELECT TD_SYSFNLIB.WEEKNUMBER_OF_CALENDAR (DATE ‘1901-01-05’, ‘COMPATIBLE’);