SQL Case Statement To Return 0 For Empty Row

Jun 11, 2008

Hi,

I have some sql and i expect a row back with some information even if there is nothing. What i want to happen is when it returns an empty row then give me a 0 so at least i get something back I am filling a dataset here and it isnt populating the fields when an empty row is returned.

SELECT 3 row_id,
'2003' year,
'Mar' period,
(SELECT count(*) FROM news WHERE news.id IN (
SELECT news.id
FROM news
WHERE news.announced_date >= '2003-03-01' AND ........

So ive tried variations of the below in a CASE statement WHEN NUll or WHEN 0 but i still get nothing back. I would like the information to return 3 2003 Mar 0 if its empty.

SELECT 3 row_id,
'2003' year,
'Mar' period,
(SELECT CASE count(*) WHEN NULL THEN 0 ELSE count(*) END FROM news WHERE news.id IN (
SELECT news.id
FROM news
WHERE news.announced_date >= '2003-03-01' AND ............

Can anyone help me please??

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Hi,

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I have a view where I'm using a series of conditions within a CASE statement to determine a numeric shipment status for a given row. In addition, I need to bring back the corresponding status text for that shipment status code.

Previously, I had been duplicating the CASE logic for both columns, like so:




Code Block...beginning of SQL view...
shipment_status =
CASE
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This works, but the logic for each of the case conditions is rather long. I'd like to move away from this for easier code management, plus I imagine that this isn't the best performance-wise.

This is what I'd like to do:



Code Block
...beginning of SQL view...
shipment_status =
CASE
[logic for condition 1]
THEN 1
WHEN [logic for condition 2]
THEN 2
WHEN [logic for condition 3]
THEN 3
WHEN [logic for condition 4]
THEN 4
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END,


shipment_status_text =

CASE shipment_status

WHEN 1 THEN 'Condition 1 text'

WHEN 2 THEN 'Condition 2 text'

WHEN 3 THEN 'Condition 3 text'

WHEN 4 THEN 'Condition 4 text'

ELSE 'Error'

END,
...remainder of SQL view...


This runs as a query, however all of the rows now should "Error" as the value for shipment_status_text.

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Hi All,
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case
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when mycasefield = 2 then 99862
when mycasefield = 3 then 99863
when mycasefield = 4 then 99864
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alt_min,
alt_max,
longitude,
latitude
(
Select MTB.LocationID
MTB.model_ID
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null, --alt max
MTB.longitude, --longitude
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from MyTblB MTB
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as per data in MS Sql

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1)material
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for ex :
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=====================
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2 xyz 33 20

Other_project
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2 Other Project 2 7

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i want sql query to show data as follows


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1 AB Corporate 1 abc -- 3
2 Other Project 2 -- dsd 7

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Abeyta100
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AS
RETURN
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from
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select
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join vwitemnbmr vi
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Where vi.Campaign = @Campaign and (vc.docdate between @startdate and @enddate)

group by vi.itemnmbr,vc.custclas, vc.custclasdescription
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------------------------------------------------
06-5841 STANDARD Standard(web) 31
06-5840 STANDARD Standard(web) 30
kr-014 STANDARD Standard(web) 72
06-5841 INDPATIENT Patient 12
06-5840 INDPATIENT Patient 9
06-5845 INDPATIENT Patient 6
06-5841 PROGRAM Program 6
06-5841 INST-HOSPITAL Hospital 11
...................

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like - i have to input @category varchar(50), @category_value varchar(50)
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itemnmbr sumcount
-----------------
06-5840 52
06-541 101
06-452 26
kr-045 252

and if categroy = 'item' then category_value = any itemnmbrs(06-5840,06-5845,06-5841 etc..)
then output should be
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-----------------------------------------------------
06-5840 STANDARD Standard(web) 31
06-5840 INDPATIENT Patient 9
06-5840 PROGRAM Program 6
06-5840 INS-HOSPITAL Hospital 17

like that..

can anyone help me to write case statement.
thanks a lot!!

create function fntotalcountcustclas

( @campaign varchar(50), @startdate datetime, @enddate datetime,
@category varchar(50), @category_value varchar(50))
RETURNS TABLE
AS
RETURN
( Select t.itemnmbr,t.custclas, t.custclasdescription, t.totalcustclas as totalcount,
case when category

from
(
select
vi.itemnmbr, replace(vc.custclas,'','Unspecified') as custclas, vc.custclasdescription, count(vc.custclas) as totalcustclas
from vwcustnmbr vc
join vwitemnbmr vi
on vi.sopnumbe=vc.sopnumbe
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group by vi.itemnmbr,vc.custclas, vc.custclasdescription
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Help With Case Statement

Jun 6, 2008

I'm not sure if I am doing this the right way. In my table I have project ids. Each project id has several activities associated with it. Each project has a starting balance. Each activity posts an expense to the total balance of the project. If the project has enough money to handle the charges made by the activities, all the activity expenses can be "posted". If there isn't enough money, I want to loop through the activities, check to see if there is enough of a balance to "post" the first one, If there is, then I want to re-adjust the balance and check the second activity. I want to scroll through each project/activity to see what can be "posted". Here is what I have so far, but I cannot work out how to change the total balance amount. Hopefully what I am trying to do makes sense!



declare @testId nchar(6)
declare @RowNum int
declare @newBalance int
select top 1 @testId=projID from #ProjIds
set @RowNum = 0

WHILE @RowNum <= (Select Max(temp_id) from #ProjIds)
BEGIN
set @RowNum = @RowNum + 1
set @newBalance = (select top 1 Bal_2300
from #RevRecData
where @testId=projId
order by projID, activity)

select projId, activity, postCr, Bal_2300,
'New_Status' = Case when (postCr <= Bal_2300) then 'Can Clear' else 'Still Check' END,
'New_Balance' = Case when (postCr <= @newBalance) then (@newBalance - postCr) else @newBalance End
from #RevRecData
where @testId=projId
order by projID, activity

select top 1 @testId=projId from #ProjIds
where projId > @testID
END

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