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SQL Group by with Summing in Sub-select

Posted on 2009-06-29
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Last Modified: 2012-05-07
Hi All,

Quite new to the SQL Language and have been scratching my head with a group by with sub-select's summing some costs from another couple of tables.

Here is the statement;

SELECT     Account_Id AS Expr1,

(SELECT SUM(TOTAL_COST) AS Expr2 FROM Job_Labour WHERE Job_Labour.JOB_NUMBER = Job_Unfinished.Job_Number) AS Labour,
(SELECT SUM(Amount) AS Expr3 FROM Creditor_Invoice_Expense WHERE (Creditor_Invoice_Expense.Job_Number = Job_Unfinished.Job_Number)) AS Material_Cost

FROM  Job_Unfinished

WHERE (Major_Work_In_Progress = 0)

GROUP BY Account_Id, Job_Number

Which gives me the result of;

65      825.92      1240.45
652      86.10      NULL
652      49.08      NULL
652      NULL      NULL
652      38.34      NULL

What I am trying to do is group the Account_ID's together as one total.

ie.

65      825.92      1240.45
652      173.52      NULL

 If I omit 'Job_Number' from the GROUP BY statement it bemoans about 'Column 'Job_Unfinished.Job_Number' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.' of course.

Anybody help me out or point me in the right direction.

With thanks, Mark

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Question by:ozbailer
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4 Comments
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 24742319
You can make your query a derived table and then sum on that grouped by just the accountid or rewrite query using left join instead of sub queries.
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Accepted Solution

by:
Kevin Cross earned 500 total points
ID: 24742325
Using what you have as a derived table:
SELECT Account_Id
, SUM(Labour) AS Labour
, SUM(Material_Cost) AS Material_Cost
FROM (SELECT     Account_Id, 
 
(SELECT SUM(TOTAL_COST) AS Expr2 FROM Job_Labour WHERE Job_Labour.JOB_NUMBER = Job_Unfinished.Job_Number) AS Labour,
(SELECT SUM(Amount) AS Expr3 FROM Creditor_Invoice_Expense WHERE (Creditor_Invoice_Expense.Job_Number = Job_Unfinished.Job_Number)) AS Material_Cost
 
FROM  Job_Unfinished
 
WHERE (Major_Work_In_Progress = 0)
 
GROUP BY Account_Id, Job_Number
) t
GROUP BY Account_Id

Open in new window

0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 24742336
As LEFT JOINs:
SELECT ju.Account_Id, 
, SUM(jl.TOTAL_COST) AS Labour
, SUM(cie.Amount) AS Material_Cost
FROM Job_Unfinished ju
LEFT JOIN Job_Labour jl ON jl.JOB_NUMBER = ju.Job_Number
LEFT JOIN Creditor_Invoice_Expense cie ON cie.Job_Number = ju.Job_Number
WHERE (ju.Major_Work_In_Progress = 0)
GROUP BY Account_Id

Open in new window

0
 

Author Closing Comment

by:ozbailer
ID: 31598225
Cheers, Thank you!
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