UDT For Division Methods

Sep 4, 2007

Hi,

I plan to implement UDT for division methods.


The following fragment TSQL with zero check:


DECLARE @a int, @b int


SELECT



CASE WHEN @b = 0 THEN NULL

ELSE @a / @b
END



Clr UDT may look like this and script will be shorter.


DECLARE @a int, @b int


SELECT @a Type :: divide(@b)







Is that better to use UDT ?

Anyone have try this before?

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Division In T-SQL

Feb 27, 2004

Hi,

Can anyone tell me why this doesn't return any decimals?


declare @f float
set @f = 6 / 18
print @f


All i get is 0... Is there something obvious i've done wrong?

TIA

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Aug 9, 2000

Hi All

I am trying to devide 24 by 30 result it gives 0, but I wouldlike to get 0.8

how can I achieve this

I will apprecite your help, thank you

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Mar 5, 2003

Hi all,

I have a prob with the following code...
in that the value of the amount of the year 2001
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can any one change the code and let me know the details


declare @year1 int
declare @year2 int
declare @month int

set @year1 = 2002
set @year2 = 2001
set @month =9

select
case when sum(case WHEN a.oper_year = @year1 THEN a.amount else 0 end) = sum(case WHEN a.oper_year = @year2 THEN a.amount else 0 end) then 0
else
(
(sum(case WHEN a.oper_year = @year1 THEN a.amount else 0 end) -
sum(case WHEN a.oper_year = @year2 THEN a.amount else 0 end))/
sum(case WHEN a.oper_year = @year2 THEN a.amount else 0 end)
)* 100 end as Percentage,
from oper_sundata a, oper_type_new b
where a.site_id = b.sun_site

Thanks

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May 1, 2007

I'm very new to sql server and still don't know the in's and out's I have this:

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Dec 17, 2007

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The problem is that X can be 0 sometimes and then I get an error.
How can I prevent errors like this for the case of X=0?
In access I would use IIF function, but it doesn't appear in SQL SERVER views.
Thanks.

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Mar 7, 2005

Hi,

I'm trying to divide two decimal(19,4) numbers but it keeps giving me a Divide by 0 error.

- 10698.25 / 76782.11 = -0.13 (but I get a Divide by 0)

I looked it up in the Sql Server docs, does the Divide by 0 error also cover Stack overflows?

If so, how do I get around this?

Many thanks,
Stuart

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Jul 31, 2007

This query is part of a larger query that updates a table that holds statistics for reporting. It yields actual Unit per Minute by plant by month. Some of the plants don't produce anything in certain months, so I'm ending up with a Divide by Zero error. I think I just need to stick another CASE statement in for each month, but that seems like it could get pretty ugly.

Any suggestions on how to improve this?


SELECT FL.REPORT_PLANT,
[JAN]= SUM(CASE WHEN MONTH(PC.MNTHYR) = 1 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 1 THEN PC.HOURS*60 ELSE 0 END),
[FEB]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 2 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 2 THEN PC.HOURS*60 ELSE 0 END),
[MAR]= SUM(CASE WHEN MONTH(PC.MNTHYR) = 3 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 3 THEN PC.HOURS*60 ELSE 0 END),
[APR]= SUM(CASE WHEN MONTH(PC.MNTHYR) = 4 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 4 THEN PC.HOURS*60 ELSE 0 END),
[MAY]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 5 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 5 THEN PC.HOURS*60 ELSE 0 END),
[JUN]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 6 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 6 THEN PC.HOURS*60 ELSE 0 END),
[JUL]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 7 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 7 THEN PC.HOURS*60 ELSE 0 END),
[AUG]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 8 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 8 THEN PC.HOURS*60 ELSE 0 END),
[SEP]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 9 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 9 THEN PC.HOURS*60 ELSE 0 END),
[OCT]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 10 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 10 THEN PC.HOURS*60 ELSE 0 END),
[NOV]=SUM(CASE WHEN MONTH(PC.MNTHYR) = 11 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 11 THEN PC.HOURS*60 ELSE 0 END),
[DEC]= SUM(CASE WHEN MONTH(PC.MNTHYR) = 12 THEN PC.TONS * 2000 / PM.EA_WT ELSE 0 END)/
SUM(CASE WHEN MONTH(PC.MNTHYR) = 12 THEN PC.HOURS*60 ELSE 0 END)
FROM PRODUCTION_CMPLT PC INNER JOIN
FACILITY_LINES FL ON PC.MANUF_SITE = FL.MANUF_SITE AND
PC.PROD_LINE = FL.PROD_LINE INNER JOIN
PROD_MASTER PM ON PC.PRODUCT=PM.PRODUCT
WHERE YEAR(PC.MNTHYR) = YEAR(GETDATE()) AND PM.UOM<>'LB'
GROUP BY FL.REPORT_PLANT

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hi
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Nov 20, 2007

I want to count the rows in two tables and then give a percentage as a result.

Something like:

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Just not quite sure how to do this.


*Thanks*

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Dec 11, 2007

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SELECT
( list_value / sale_price ) as ratio
FROM
values


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doco

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Dec 14, 2007

Hi,

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Mar 15, 2008

SELECT [Record Number], Date, Car, Miles_Start, Miles_Stop, Gallons_FillUp, Miles_Stop - Miles_Start AS Miles_Total, Miles_Total / Gallons_FillUp AS MPG
FROM Sheet1_Table
ORDER BY Date DESC, Car

Hi,
I have Visual Studio 2008 Pro / Using VB 9.0 / SQL Server Express 2005. I am making a Miles per gallon calculator for my dad. All Fields /Cells are populated in two records excepting the Miles_Total & MPG. The Miles_Total Comes out fine but... the MPG does not . Any help with this Query would be greatly appreciated!
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Nov 15, 2007

I've got the following SQLSELECT count(*) FROM tablea AJOIN tableb B ON ..etc..WHERE a.string_val = 'test' ANDb.divider 0 ANDa.number 0 AND(a.number / b.divider 0)The b.divider value can be 0, but still I get the division by zeroerror message.I guess the reason is that the database performs the where statementsone at the time?So when performing the division a.number / b.divider it could get 0 inthe divider even if b.divider 0 is also part of the wherestatement??My question is then.. How can I work around this problem? Changing thedatabase to set b.divider always 0 is not an option

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Mar 5, 2008

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Jan 9, 2006

division in SQL results in 0
Posted on:  01/09/2006 09:20:13

  





declare @x int, @y int, @f float
set @x = 100
set @y = 2000
set @f = @x / @y
print @x
print @y
print @f


in the above code @f prints as 0 instead of 0.05
how would i correct that?

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Nov 9, 2015

I want to do something simple but I don't know how to do it using MDX. I searched a solution on the web but I found nothing. I want to SUM the result of the division of two measures. I tried using the WITH MEMBER Measures.sum_divided AS SUM(x/y) but the result in the cells are all #Error.

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Mar 24, 2008

Hi to all,
Im using SQL Server 2000.
If i divide two integer column values, the result i am getting is integer. i.e
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AttendedClasses,TotalClasses are two column  names(Integer). I hav declared Percentage column as float.
The result im getting is integer value..
I want the actual float value(i.e Percentage)
How to Resolve this??
Help me with this issue..
thanks in advance.
 
 

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Aug 20, 2004

Hi - I have what seems like a simple problem and I cannot find an answer to it. I'm hoping someone here can help.

I want to divide 2 numbers but have the answer come back with no decimal places. I don't want to round up or down..just give me the whole number and drop the decimal places. For example:

Select units/60 as answer


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I'm on SQL server version 8.0.

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May 1, 2008

I have a function that divides the results of 2 seperate datafiffs to provide a ratio. For some reason I cannot get the result to return as a decimal - it is only giving me integers. I have tried cast and converting both the idividual numbers and the results, no luck. If I write the query on it's own, casting the one of the values as decimal will return the right value. Any ideas what I am missing? Here is the function:



Create function fn_FTE(
@tkpr varchar(5),
@start datetime,
@end datetime)

Returns decimal
Begin
declare

@fte decimal


select @fte =

sum(datediff(dd,
(case
when eedatebeg < @start then @start
else eedatebeg
end),
(case
when eedateend > @end then @end
when eedateend is null then @end
else eedateend
end))) /datediff(dd,@start,@end)

from vw_employ_dates
where
eedatebeg < @end
and (eedateend > @start or eedateend is null)
and eudescrip = @tkpr


return @FTE
end


thanks for any help!

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Oct 5, 2007

I have a view that I am works fine -

ALTER view [dbo].[_tec_SOP_POP_link] as
select SOP60100.SOPNUMBE as SOP_ORDER_NUMBER,
SOP60100.QTYRECVD as QtyReceivedSoFar,
SOP30200.sopnumbe as SOP_INV_NUMBER,
SOP60100.PONUMBER, SOP60100.QTYONPO as POQTY_REMAININGQTY,
POP10110.ITEMNMBR as ITEM_NUMBER,
POP10110.ITEMDESC as itemdescription, POP30310.UNITCOST as ReceivedCost,
Sum (case when pop30310.ponumber = sop60100.ponumber AND
pop30310.trxsorce like 'POIVC%' then pop30310.umqtyinb else 0 end) as TOTALINVOICEDMATCHED,
Sum (case when pop30310.ponumber = sop60100.ponumber AND
pop30310.trxsorce like 'POIVC%' then pop30310.extdcost else 0 end) as TOTALDOLLARSINVOICEDMATCHED,
from sop60100 inner join sop30200 on sop60100.sopnumbe = sop30200.ORIGNUMB AND sop30200.soptype = 3
inner join POP10110 on SOP60100.PONUMBER = POP10110.PONUMBER
inner join pop30310 on sop60100.ponumber = pop30310.ponumber
where SOP60100.ORD = POP10110.ORD
GROUP BY SOP60100.SOPNUMBE, SOP60100.QTYRECVD, SOP30200.sopnumbe, SOP60100.PONUMBER, SOP60100.QTYONPO,
POP10110.ITEMNMBR, POP10110.ITEMDESC, POP30310.UNITCOST, pop30310.umqtyinb


I want to add a column (UNITCOSTINVOICEDMATCHED)that divides TOTALDOLLARSINVOICEDMATCHED/TOTALINVOICEDMATCHED

I inserted the following (which did not work)-

Sum (TOTALDOLLARSINVOICEDMATCHED/TOTALINVOICEDMATCHED) as UNITCOSTINVOICEDMATCHED

error said - TOTALDOLLARSINVOICEDMATCHED column not recognized

The I inserted this statement - thinking I needed another case statement -

Sum(case when pop30310.ponumber = sop60100.ponumber AND
pop30310.trxsorce like 'POIVC%' then sum(pop30310.extdcost)/ sum(pop30310.umqtyinb)
else 0 end)as UNITCOSTINVOICEDMATCH

this returned the error -

Msg 130, Level 15, State 1, Procedure _tec_SOP_POP_link, Line 2
Cannot perform an aggregate function on an expression containing an aggregate or a subquery.

Any thoughts?

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Jul 23, 2005

I am trying to divide one number by another and I can't get it toreturn the right value....in general I want to see how many fruits I have, then get the number ofapples and divide the apples by that total to get the percentage ofapplesI haveDeclare @Val decimal(6,2)Set @Val=((select count(*) from Fruits where fruit='apples') /* = #APPLES/(select count(*) from Fruits) /* = TOTAL FRUITS)SELECT @Valin my actual case the apples=7 and the fruits=8but I can only return 87 or 875 (by multiplying by 100 or 1000) but Ican't get 87.5, which is the value I need.

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Dec 6, 2007

To set the stage, Tables are set up as such for this question:
-----------

Table: Answers
ID - Integer - Auto
Answer - Integer
QuestionID - Integer - FK from the QuizMaster table
StudentID - Integer - FK from the Students table

Table: QuizMaster

ID - Integer - Auto
Answer - Integer

Table: Students
ID - Integer - Auto
StudentName - Varchar(50)
----------
I would like to have an either a sql statement (1st) or a stored procedure (2nd) that would give me the percent correct for each student on the test.

In Access I could cheat and use this:



Code BlockSELECT Students.StudentName,
Count(Students.StudentName) AS TotalCorrect,
(SELECT Count(QuizMaster.ID) FROM QuizMaster;) AS TotalQuestions,
([TotalCorrect])/([TotalQuestions])*100 AS PercentValue
FROM (Answers INNER JOIN Students

ON Answers.StudentID = Students.ID)
INNER JOIN QuizMaster
ON (Answers.Answer = QuizMaster.Answer)
AND (Answers.QuestionID = QuizMaster.ID)
GROUP BY Students.StudentName
ORDER BY Students.StudentName, PercentValue;

Which is composed of the following...







Code Block

SELECT Students.StudentName,


Count(Students.StudentName) AS TotalCorrect
FROM (Answers INNER JOIN Students

ON Answers.StudentID = Students.ID)
INNER JOIN QuizMaster
ON (Answers.Answer = QuizMaster.Answer)
AND (Answers.QuestionID = QuizMaster.ID)


GROUP BY Students.StudentName;


SELECT Count(QuizMaster.ID) AS TotalQuestions
FROM QuizMaster;


([TotalCorrect])/([TotalQuestions])*100 AS PercentValue


But... that wont fly in SQL Server...What would work without using temp tables?
What would be the EASIEST way to do this?

Another way someone suggested is:




Code BlockCREATE PROCEDURE GetStudentGradeByID @StudentID Integer

AS

BEGIN


DECLARE @TotalQuestionsAsked as Integer;
DECLARE @StudentName as VarChar(50);
DECLARE @QuestionsCorrect as Integer;
DECLARE @PercentCorrect as Float;

set @TotalQuestionsAsked = select COUNT(*)FROM QuizMaster;
set @StudentName = select StudentName from Students where ID = @StudentID;

set @QuestionsCorrect = select count(Answers.ID) from Answers LEFT JOIN QuizMaster on Answers.QuestionID = QuizMaster.ID where StudentID = @StudentID AND QuizMaster.Answer = Answers.Answer;
set @PercentCorrect = (CAST (@QuestionsCorrect AS FLOAT) / CAST (@TotalQuestionsAsked AS FLOAT)) * 100.0;

select @QuestionsCorrect as TotalCorrect, @StudentName as Student, @TotalQuestionsAsked as NumQuestions, @PercentCorrect as CorrectPct;

END


But I need this as a datasource for a datagrid that would show all students etc... so using a parameter isn't really what I want.
So... could a stored procedure work for this?

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Oct 16, 2007

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I enter code:


DECLARE @special as decimal(3,2)

SET @special = 3/2

SELECT @special


The result comes back 1.00. Thanks for any help.

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Apr 24, 2015

My function in my report, thu function I currently use is the following:

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If Denominator <> 0 Then
   Return Numerator/Denominator
Else
   Return DivideByZeroDefault
End If
End Function

=Code.CalcDivision(Fields!Sales_Refund.Value,Fields!Sales.Value,Nothing)

The problem is that it still return zero instead of nothing, which is the goal here, I have tried different variation but still returning zero.

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Apr 5, 2007

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Sep 22, 2005

Hello all, first post and really new to sub subs too! If any has time, I'm trying to retrieve data like this:
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OTHER 24 (% OF 24 TO 92)
etc...

I'm using the SQL below but can't seem to work out the percentage calculation. (The below only returns 0's). Thanks for any help up front!!!

SELECT Reason, COUNT(Reason) AS Countee, COUNT(Reason) /
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FROM rb_power.RBCOBBLETRK
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ORDER BY Countee DESC

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Feb 1, 2007

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Jul 20, 2005

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Apr 20, 2008

Hi
I have 2 tables

table1 which gives the schedule for day
id sat sun mon tue wed thu fri
1 40 50 35 75 80 90 95
2 30 40 45 45 95 85 45
3 40 50 25 25 75 75 55
4 50 60 35 55 65 65 65
5 70 35 75 65 30 35 70

table2 which gives total schedule for week
id week
1 500
2 600
3 550
4 450
5 650


i want to calculate to percentage schedule for each day for week for each value in id column

something like
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what im doing is
select (sat/week)
from table1
inner join table2
on table1.id = table2.id
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its giving me error because im using group by clause

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thanks,
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