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 Subtraction giving me wrong figure

Author  Topic 

masond
Constraint Violating Yak Guru

447 Posts

Posted - 2012-11-07 : 05:01:52
Hey

Guys really quick random question

i am having problems doing a subtraction and i don’t know why.

This is my query

SELECT
[FDMSAccountNo],
SUM([Tot_Purch_Amt]) as GrossSales,
SUM([Refund_Amt])as SalesRefunds,
sum([Tot_Purch_Amt])-sum([Refund_Amt]) as SaleNet,
SUM([DCC_Purch_Amt])as DCC,
SUM([DCC_Refund_Amt])as DCCRefunds,
SUM([DCC_Purch_Amt])-SUM([DCC_Refund_Amt]) as DCCnet,
SUM([Adjs]) as adjustments
FROM [FDMS].[dbo].[Fact_Omnipay_Profitability]
group by FDMSAccountNo

i want to get my grosssales column – Salesrefund to produce a netfigure

At present my query is giving me an inaccurate figure for eg
gross sales Salesrefund SaleNet
2484691.81 -32893.84 2517585.65

when in fact the salesnet should be 2451797.97

Any ideas why ?

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2012-11-07 : 05:08:35
Can you at least please post the data types?


Too old to Rock'n'Roll too young to die.
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masond
Constraint Violating Yak Guru

447 Posts

Posted - 2012-11-07 : 05:19:21
Hi Webfred

What do you mean by data types ? string, varchar etc ?
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webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2012-11-07 : 05:23:21
Yes.
The column Tot_Purch_Amt and the other involved columns - they have a data type we need to know.


Too old to Rock'n'Roll too young to die.
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masond
Constraint Violating Yak Guru

447 Posts

Posted - 2012-11-07 : 05:30:48
Hi webfred

i am unable to find that out at present :( as i dont have rights to the table. :(
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bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2012-11-07 : 06:21:30
quote:
At present my query is giving me an inaccurate figure for eg
gross sales Salesrefund SaleNet
2484691.81 -32893.84 2517585.65

when in fact the salesnet should be 2451797.97

Do this, u will get 2451797.97

sum([Tot_Purch_Amt])+sum([Refund_Amt]) as SaleNet








--
Chandu
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masond
Constraint Violating Yak Guru

447 Posts

Posted - 2012-11-07 : 08:03:10
HI bandi

I had to do this

Sum([Tot_Purch_Amt])-sum(-[Refund_Amt]) as SaleNet,

this returned the correct value
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bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2012-11-07 : 08:07:36
quote:
Originally posted by masond

HI bandi

I had to do this

Sum([Tot_Purch_Amt])-sum(-[Refund_Amt]) as SaleNet,

this returned the correct value



okey that is also fine. Why i suggested + means i thought u had Refund_Amt with negative values...............



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Chandu
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