My data is a list of customers and products, and the cost for each product
Member Product Cost
Bob A123 $25
Bob A123 $25
Bob A123 $75
Joe A789 $50
Joe A789 $50
Bob C321 $50
Joe A123 $50
etc, etc, etc
My current query grabs each customer, product and cost, and also the total cost for that customer. It gives results like this:
Member Product Cost Total Cost
Bob A123 $125 $275
Bob A1433 $100 $275
Bob C321 $50 $275
Joe A123 $150 $250
Joe A789 $100 $250
How can I get the top 10 by Total Cost, not just the top 10 records overall? My query is:
SELECT a.Member
,a.Product
,SUM(a.Cost)
,(SELECT SUM(b.Cost) from MyTable b WHERE b.Member = a.Member) as 'Total Cost'
FROM MyTable a
GROUP BY a.Member
,a.Product
ORDER BY [Total Cost] DESC
If I do a SELECT TOP 10 it only gives me the first 10 rows. The actual Top 10 would end up being more like 40 or 50 rows.
Thanks!
Try this one.
SELECT tbl.member,
tbl.product,
Sum(tbl.cost) AS cost,
Max(stbl.totalcost) AS totalcost
FROM mytable tbl
INNER JOIN (SELECT member,
Sum(cost) AS totalcost,
Row_number() OVER (ORDER BY Sum(cost) DESC) AS rn
FROM mytable
GROUP BY member) stbl
ON stbl.member = tbl.member
WHERE stbl.rn <= 10
GROUP BY tbl.member, tbl.product
ORDER BY Max(stbl.rn)
Online Demo: http://sqlfiddle.com/#!18/87857/1/0
Table structure & Sample Data
CREATE TABLE mytable
(
member NVARCHAR(50),
product NVARCHAR(10),
cost INT
)
INSERT INTO mytable
VALUES ('Bob','A123','25'),
('Bob','A123','25'),
('Bob','A123','75'),
('Joe','A789','50'),
('Joe','A789','50'),
('Bob','C321','50'),
('Joe','A123','50'),
('Rock','A123','50'),
('Anord','A100','50'),
('Jack','A123','50'),
('Anord','A123','50'),
('Joe','A123','50'),
('Karma','A123','50'),
('Seetha','A123','50'),
('Aruna','A123','50'),
('Jake','A123','50'),
('Paul','A123','50'),
('Logan','A123','50'),
('Joe','A123','50');
Subquery - Total cost per customer
SELECT member,
Sum(cost) AS totalcost,
Row_number() OVER (ORDER BY Sum(cost) DESC) AS rn
FROM mytable
GROUP BY member
Subquery: Output
+---------+------------+----+
| member | totalcost | rn |
+---------+------------+----+
| Joe | 250 | 1 |
| Bob | 175 | 2 |
| Anord | 100 | 3 |
| Aruna | 50 | 4 |
| Jack | 50 | 5 |
| Jake | 50 | 6 |
| Karma | 50 | 7 |
| Logan | 50 | 8 |
| Paul | 50 | 9 |
| Rock | 50 | 10 |
| Seetha | 50 | 11 |
+---------+------------+----+
Record Count: 11
Main Query
SELECT tbl.member,
tbl.product,
Sum(tbl.cost) AS cost,
Max(stbl.totalcost) AS totalcost,
Max(stbl.rn) AS rn
FROM mytable tbl
INNER JOIN (SELECT member,
Sum(cost) AS totalcost,
Row_number() OVER (ORDER BY Sum(cost) DESC) AS rn
FROM mytable
GROUP BY member) stbl
ON stbl.member = tbl.member
GROUP BY tbl.member, tbl.product
ORDER BY Max(stbl.rn)
Main Query: Output
+---------+----------+-------+------------+----+
| member | product | cost | totalcost | rn |
+---------+----------+-------+------------+----+
| Joe | A123 | 150 | 250 | 1 |
| Joe | A789 | 100 | 250 | 1 |
| Bob | C321 | 50 | 175 | 2 |
| Bob | A123 | 125 | 175 | 2 |
| Anord | A100 | 50 | 100 | 3 |
| Anord | A123 | 50 | 100 | 3 |
| Aruna | A123 | 50 | 50 | 4 |
| Jack | A123 | 50 | 50 | 5 |
| Jake | A123 | 50 | 50 | 6 |
| Karma | A123 | 50 | 50 | 7 |
| Logan | A123 | 50 | 50 | 8 |
| Paul | A123 | 50 | 50 | 9 |
| Rock | A123 | 50 | 50 | 10 |
| Seetha | A123 | 50 | 50 | 11 |
+---------+----------+-------+------------+----+
Record Count: 14