Getting quartely sales data

Question

Hi I've the following data . and i confused to get the quartely data from the below table
Could you please help out with the skelton query to get the quartely data .
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (13413, 'Air Regulators', 2450, 144, 2,
    5.09, TO_DATE('04/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (13414, 'Air Regulators', 1165, 144, 3,
    10.52, TO_DATE('04/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (13630, 'Air Regulators', 3260, 144, 4,
    20.53, TO_DATE('04/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (13890, 'Air Regulators', 270, 145, 1,
    10.31, TO_DATE('06/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (19286, 'Small Equipments', 688, 145, 2,
    3.99, TO_DATE('06/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (13413, 'Air Regulators', 2450, 145, 3,
    20.5, TO_DATE('06/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (23314, 'Small Equipments', 1390, 145, 4,
    10.5, TO_DATE('06/01/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (23541, 'Small Equipments', 1105, 146, 2,
    10.5, TO_DATE('06/09/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into ORDER_ITEMS
   (ITEM_ID, ITEM_DESC, PRICE, ORDER_ID, QUANTITY, DISCOUNT, DATE_ENTERED)
Values
   (23743, 'Small Equipments', 3235, 146, 1,
    10.5, TO_DATE('06/09/2008 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
COMMIT;Thank you for your suggestions
Edited by: Smile on Jan 7, 2013 10:55 AM

Answer 1

Hi,
If you're using the standard quarters (that is, quarters begin on January 1, April 1, July 1 and October 1), then you can use the TRUNC function, like this:
SELECT       TO_CHAR ( TRUNC (date_entered, 'Q')
              , 'YYYY "Q"Q'
            )               AS quarter
,       COUNT (DISTINCT item_id)     AS item_cnt
,       SUM (price * quantity)     AS total_sales
FROM       order_items
GROUP BY  TRUNC (date_entered, 'Q')
ORDER BY  TRUNC (date_entered, 'Q')
;Even if your quarters are not the standard ones (e.g., if new quarters begin on the 15th of February, May, August and November), you still might want to use TRUNC.
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables involved, and also post the results you want from that data. The INSERT statements you posted are good, but it looks like all the data is from the same quarter. Perhaps some data from different quarters, even different years, would be a better test.
Explain, using specific examples, how you get the results you post from the given data.
Always say which version of Oracle you're using (e.g., 11.2.0.2.0).
See the forum FAQ {message:id=9360002}