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SQL SUM - producing wrong results

Posted on 2014-03-05
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Last Modified: 2014-03-05
Hi

Please look at the queries here
sum
You will see the first results which show the correct results

What I'm trying to do is group the results by days, and give an overall sum for each column
however, i'm getting all -1 results and then werid results for [23-00] column

i'll actually be selecting lots of machines (removing the MachineId=160 bit)
and selecting over a 14 day period, but removed for simplicity

what am i doing wrong
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Question by:websss
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Expert Comment

by:John_Vidmar
ID: 39906188
Your column-names have special characters and do not start with a letter, therefore, you must enclose them in an object-delimiter (like brackets, or double-quotes).

This:  sum(06-07) as [06-07]

should be:  sum([06-07]) as [06-07]
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Author Comment

by:websss
ID: 39906255
I now get

Msg 8117, Level 16, State 1, Line 4
Operand data type bit is invalid for sum operator.
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LVL 11

Accepted Solution

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John_Vidmar earned 500 total points
ID: 39906271
If aggregate-functions do not work on bit-operands then cast them to integer:

sum( cast([06-07] as integer) ) as [06-07]
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Author Comment

by:websss
ID: 39906277
actually

this worked
Select  BranchId,datename(dw,ReportedDate)ReportedDate,
sum(CONVERT(INT,[06-07])) as [06-07], sum(CONVERT(INT,[07-08])) as [07-08], sum(CONVERT(INT,[08-09])) as [08-09],sum(CONVERT(INT,[09-10])) as [09-10],sum(CONVERT(INT,[10-11])) as [10-11],sum(CONVERT(INT,[11-12])) as [11-12],sum(CONVERT(INT,[12-13])) as [12-13],
sum(CONVERT(INT,[13-14])) as [13-14],sum(CONVERT(INT,[14-15])) as [14-15],sum(CONVERT(INT,[15-16])) as [15-16],sum(CONVERT(INT,[16-17])) as [16-17],sum(CONVERT(INT,[17-18])) as [17-18],sum(CONVERT(INT,[18-19])) as [19-20],sum(CONVERT(INT,[20-21])) as [20-21],
sum(CONVERT(INT,[21-22])) as [21-22],sum(CONVERT(INT,[22-23])) as [22-23],sum(CONVERT(INT,[23-00])) as [23-00],sum(CONVERT(INT,[00-01])) as [00-01],sum(CONVERT(INT,[01-02])) as [01-02],sum(CONVERT(INT,[02-03])) as [02-03],sum(CONVERT(INT,[02-03])) as [02-03],
sum(CONVERT(INT,[03-04])) as [03-04],sum(CONVERT(INT,[04-05])) as [04-05],sum(CONVERT(INT,[05-06])) as [05-06], MachineType 
From [UsageLogs]
WHERE BranchId = 51 AND MachineType = 1  and MachineType = 1 and MachineId = 160
group by BranchId, MachineType ,datename(dw,ReportedDate)

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