Example: Querying for Beginning of the Week and the Week Number - Teradata Vantage

This query returns the beginning of the week and the week number for 2009, assuming that no calendar is set for the session. The session uses the default business calendar “Teradata.”

SEL WeekBegin, week_of_year FROM Sys_Calendar.BusinessCalendar WHERE calendar_date = DATE '2009-03-15'; 

Week_begin         week_of_year
-----------        -------------------
2009/03/15           11