Example: Querying the Number of Weeks from the Year Beginning - Analytics Database - Teradata Vantage

If the current date is January 5, 1901, the following query returns 0 because January 5, 1901, is in week 0 of 1901 in the Teradata calendar:

SELECT TD_SYSFNLIB.WEEKNUMBER_OF_YEAR (CURRENT_DATE);

The following query returns 1 because January 5, 1901, is in week 1 of 1901 in the COMPATIBLE calendar:

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