Sql Grouping

Question

alt text http://agricam.net/test.gif

I need to add a row dynamically in SQL after the Marketer number changes with the header "Marketer Total" that should add only the "Total" column. For example, after the last row of Marketer 22 row, there should be "Marketer Total" and then under the Total column should be 1804. The same should occur after the last row of Marketer 500.

See image at http://agricam.net/test.gif

Current Query:

select Marketer, SubMarketer, Grade, Total, Convert(varchar,Date,101)[Date] from SomeTable where Date >= '2/25/2009' and Date < '2/26/2009' and Marketer in ('22','500') group by SubMarketer,Grade,Marketer, Date , total order by Marketer

Thanks.

Answer 1

see Using ROLLUP to aggregate data in SQL

implementation:

DECLARE @SOMETABLE TABLE (SUBMARKETER INT, GRADE CHAR, MARKETER INT, 
  DATE DATETIME, TOTAL INT)
INSERT INTO @SOMETABLE
SELECT 1415, 'A', 22, '02/25/2009', 26 UNION
SELECT 1415, 'B', 22, '02/25/2009', 93 UNION
SELECT 1415, 'C', 22, '02/25/2009', 1175 UNION
SELECT 1415, 'D', 22, '02/25/2009', 510 UNION
SELECT 1169, 'B', 500, '02/25/2009', 1 UNION
SELECT 1169, 'C', 500, '02/25/2009', 3 UNION
SELECT 1393, 'C', 500, '02/25/2009', 2 UNION
SELECT 2, 'B', 500, '02/25/2009', 5 UNION
SELECT 2, 'C', 500, '02/25/2009', 111 UNION
SELECT 2, 'D', 500, '02/25/2009', 18 

SELECT 
  CASE WHEN SUBMARKETER IS NULL THEN 'Marketer Total' 
    ELSE CONVERT(VARCHAR, MARKETER) END MARKETER, 
    SUBMARKETER, GRADE, TOTAL, DATE 
  FROM (
    SELECT MARKETER, SUBMARKETER, GRADE, SUM(TOTAL) AS TOTAL, 
    CONVERT(VARCHAR,DATE,101)[DATE] 
    FROM @SOMETABLE 
    WHERE DATE >= '2/25/2009' AND DATE < '2/26/2009' 
     AND MARKETER IN ('22','500') 
    GROUP BY MARKETER, SUBMARKETER, GRADE, DATE WITH ROLLUP
)M 
WHERE M.MARKETER IS NOT NULL 
AND NOT (SUBMARKETER IS NOT NULL AND DATE IS NULL)

attention : this will work fine if MARKETER, SUBMARKETER and DATE columns are NOT NULL. If there will be NULL values of theese fields in table, that will became an issue to filter out useless grouping.

Answer 2

Coldice's answer is the correct one. Unless you have a compelling reason to store aggregate data in the table, the query engine is sufficiently powerful enough to do this for you. Can you explain why you need this row in the table? Is it for display purposes? You can use the ROLLUP function to put the aggregate results in a query or you can run a separate query a such to sow the totals:

SELECT marketer, SUM(total) FROM TablenameHere GROUP BY marketer

Answer 3

我相信您也可以使用COMPUTE SUM

Answer 4

Create a trigger on the table that calculates the total when a record is inserted. That way, you can verify you have the lastest total any time there is movement in the database.