HELP with case statement [Divide by zero error encountered.] !

Hi,
I have a case statement that has been giving me hell for the past day, can
anyone suggest another way of validating is those field have zeros or not.
The field types are numberic, looking at the table their is no Null values i
n
there a few hundred zeros (0, .000). I have tried this statement in many wa
y
still the same result.
Divide by zero error encountered.
CASE when sum (dids.supplier_cost) IS NULL
then '0'
when sum (dihs.qty_total) = '0'
then '0'
when sum (dihs.qty_total) IS NULL
then '0'
WHEN SUM (dids.revenue) = '0'
THEN '0'
WHEN SUM (dids.revenue) IS NULL
else sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
end as [dollar_turns],in your case statement you r not checking for dids.supplier_cost = 0
and in your else clause you are divinding by
( (dihs.qty_total) * dids.supplier_cost )
hope thishelps
rgds
abhishek
"ITDUDE27" wrote:

> Hi,
> I have a case statement that has been giving me hell for the past day, can
> anyone suggest another way of validating is those field have zeros or not.
> The field types are numberic, looking at the table their is no Null values
in
> there a few hundred zeros (0, .000). I have tried this statement in many
way
> still the same result.
> Divide by zero error encountered.
>
> CASE when sum (dids.supplier_cost) IS NULL
> then '0'
> when sum (dihs.qty_total) = '0'
> then '0'
> when sum (dihs.qty_total) IS NULL
> then '0'
> WHEN SUM (dids.revenue) = '0'
> THEN '0'
> WHEN SUM (dids.revenue) IS NULL
> else sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
> end as [dollar_turns],
>|||By any chance are you rinning SQL 2005? I seem to recall someone else
having a similar issue where the optimizer evaluated the whole
statement rather than one test at a time.
Stu
ITDUDE27 wrote:
> Hi,
> I have a case statement that has been giving me hell for the past day, can
> anyone suggest another way of validating is those field have zeros or not.
> The field types are numberic, looking at the table their is no Null values
in
> there a few hundred zeros (0, .000). I have tried this statement in many
way
> still the same result.
> Divide by zero error encountered.
>
> CASE when sum (dids.supplier_cost) IS NULL
> then '0'
> when sum (dihs.qty_total) = '0'
> then '0'
> when sum (dihs.qty_total) IS NULL
> then '0'
> WHEN SUM (dids.revenue) = '0'
> THEN '0'
> WHEN SUM (dids.revenue) IS NULL
> else sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
> end as [dollar_turns],|||Hi
Your assumption is wrong :)
Let me explain it.
For simplicity I am showing the columns as a(supplier_cost)
,b(qty_total),c(revenue)
lets say the table is like this...
a b c
1 1 1
0 0 0
For all the cases the sum is going to be 1 (for all three columns)
But analyze this..
sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
its actually 1/(1*1) + 0/(0*0)
I guess maybe you are trying for something like this in your else clause..
sum (dids.revenue)/sum(dihs.qty_total) * sum(dids.supplier_cost)
If not change your logic accordingly.
Hope this helps.
--
-Omnibuzz (The SQL GC)
http://omnibuzz-sql.blogspot.com/|||This thread illustrates exactly why one of the best ways to get help is to
include the *ACTUAL* table DDL code *AND* some sample data INSERT
statements.
No so many back-and-forths just trying to understand the issue.
Arnie Rowland, YACE*
"To be successful, your heart must accompany your knowledge."
*Yet Another certification Exam
"Omnibuzz" <Omnibuzz@.discussions.microsoft.com> wrote in message
news:6DEF9528-1748-4905-ACEE-0567A384126B@.microsoft.com...
> Hi
> Your assumption is wrong :)
> Let me explain it.
> For simplicity I am showing the columns as a(supplier_cost)
> ,b(qty_total),c(revenue)
> lets say the table is like this...
> a b c
> 1 1 1
> 0 0 0
> For all the cases the sum is going to be 1 (for all three columns)
> But analyze this..
> sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
> its actually 1/(1*1) + 0/(0*0)
> I guess maybe you are trying for something like this in your else clause..
> sum (dids.revenue)/sum(dihs.qty_total) * sum(dids.supplier_cost)
> If not change your logic accordingly.
> Hope this helps.
> --
> -Omnibuzz (The SQL GC)
> http://omnibuzz-sql.blogspot.com/
>sql

HELP with case statement [Divide by zero error encountered.] !

I am getting the same result pandey, I might have left that of by accident.
I
have tried it many ways.
case when sum (dids.supplier_cost) = '0'
then '0'
when sum (dids.supplier_cost) IS NULL
then '0'
when sum (dihs.qty_total) = '0'
then '0'
when sum (dihs.qty_total) IS NULL
then '0'
WHEN SUM (dids.revenue) = '0'
THEN '0'
WHEN SUM (dids.revenue) IS NULL
THEN '0'
else sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
end [dollar_turns],
"Abhishek Pandey" wrote:
> in your case statement you r not checking for dids.supplier_cost = 0
> and in your else clause you are divinding by
> ( (dihs.qty_total) * dids.supplier_cost )
> hope thishelps
> rgds
> abhishek
> "ITDUDE27" wrote:
>i am not sure what exactly are you trying to do here..
in your case statement you are checking "sum(dids.supplier_cost)" and other
things for 0 and handling it accordingly but in else clause you are divindin
g
by dids.supplier_cost.
say for example
dids.supplier_cost has three values
1
0
3
while sum(dids.supplier_cost) <> 0 but this doest garuntee that individual
values are also not zero.
so in this case when it goes to else clause sql server experience a divide
by zero error coz what it will try to do is this
sum( somethingvalue / somenonzerovalue + somevalue/ 0 + somevalue/somevalue)
i hope this is clear enough.
You gotta design your query in a better way. if you are having a hard time
try to post your FULL query and some1 would be able to help you out.
regards
Abhishek
"ITDUDE27" wrote:
> I am getting the same result pandey, I might have left that of by accident
. I
> have tried it many ways.
> case when sum (dids.supplier_cost) = '0'
> then '0'
> when sum (dids.supplier_cost) IS NULL
> then '0'
> when sum (dihs.qty_total) = '0'
> then '0'
> when sum (dihs.qty_total) IS NULL
> then '0'
> WHEN SUM (dids.revenue) = '0'
> THEN '0'
> WHEN SUM (dids.revenue) IS NULL
> THEN '0'
> else sum (dids.revenue/((dihs.qty_total) * dids.supplier_cost))
> end [dollar_turns],
> "Abhishek Pandey" wrote:
>

help with a scalare function

i wrote a scalare function-

select name,id

from tableName

where function1(id) / function2(id)>100

but sometimes function2 returns zero so im getting a divide by zero exception.

how can i solve this problem?

thanks in advanced.

? It depends on what do you want for output if function2 returns 0... Here's one way to handle it (return nothing): select name,id from tableName where case function2(id) when 0 then 0 else function1(id) / function2(id) end > 100 ...Keep in mind that using functions in this way is going to force table scans, thereby creating some serious performance issues. You might want to reevaluate the problem you're solving here. -- Adam MachanicPro SQL Server 2005, available nowhttp://www..apress.com/book/bookDisplay.html?bID=457-- <ppl1@.discussions.microsoft..com> wrote in message news:ea55a515-a0d6-480b-b89a-92cd54cb6d6b@.discussions.microsoft.com... i wrote a scalare function- select name,id from tableName where function1(id) / function2(id)>100 but sometimes function2 returns zero so im getting a divide by zero exception. how can i solve this problem? thanks in advanced.|||ok thanks for the help|||

You can modify your WHERE clause to:

where function1(id) / nullif(function2(id), 0)>100