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MySQL query to get group total using Group by With ROLLUP?

Posted on 2013-01-04
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Last Modified: 2013-01-05
Please help me with MySQL query, thanks.

Here is my sample table:

ID  Service Quantity
3          a             3
1          a             2
12        c           22
5          c           6
10        c            3
20        b            1
11        b            1
4          b            2


I would like to get the subtotal and total, the data is grouped by and sorted by service, also in each group, ID is sorted,  the result is as belowt:
ID Service Quantity
1        a         2
3        a         3
Subtotal :    5
            
4       b         2
11     b         1
20     b         1
Subtotal:    4
            
5       c        6
10     c        3
12     c      22
Subtotal:   31  

Total:         40
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Question by:HemlockPrinters
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Chris Luttrell earned 500 total points
ID: 38746372
This is a way to do it in SQL Server :
CREATE TABLE sample (ID INT,  Service CHAR(1), Quantity INT);
INSERT INTO SAMPLE VALUES 
(3, 'a', 3),
(1, 'a', 2),
(12, 'c', 22),
(5, 'c', 6),
(10, 'c', 3),
(20, 'b', 1),
(11, 'b', 1),
(4, 'b', 2);

SELECT	ID, 
	CASE WHEN Service IS NULL THEN 'Total:'  
		WHEN ID IS NULL THEN 'Subtotal:' 
		ELSE Service END Service, 
	SUM(Quantity) Quantity
FROM sample
GROUP BY Service, ID
WITH ROLLUP

DROP TABLE sample

Open in new window

which yields these results:Rollup Results(sampe written and run on SQL 2008 so INSERT will need tweaked for SQL 2005, but the SELECT ... WITH ROLLUP will work in 2005)
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