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SQL Group by with Summing in Sub-select

ozbailer
ozbailer asked
on
Medium Priority
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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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Kevin CrossChief Technology Officer
CERTIFIED EXPERT
Most Valuable Expert 2011

Commented:
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.
Chief Technology Officer
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Most Valuable Expert 2011
Commented:
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Kevin CrossChief Technology Officer
CERTIFIED EXPERT
Most Valuable Expert 2011

Commented:
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

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Commented:
Cheers, Thank you!
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