Example: Querying the Number of Months from the Quarter Beginning - Teradata Vantage

If the current date is April 20, 2011, the following query returns 1 because April 20, 2011, is in the first month of the quarter in the Teradata calendar:

SELECT TD_SYSFNLIB.MONTHNUMBER_OF_QUARTER(CURRENT_DATE);

The following query returns 1 because April 20, 2011, is in the first month of the quarter in the ISO calendar:

SELECT TD_SYSFNLIB.MONTHNUMBER_OF_QUARTER(DATE '2011-04-20', 'ISO');