Solved

Finding the percent SQL syntax

Posted on 2004-09-30
6
414 Views
Last Modified: 2008-03-10
Hello,

My last columns are trying to find the percent of items that contain a L or an R, you get the idea.  However, the only percent im coming up with is 0, any suggestions?

Thank You

SELECT
      LINNBR As "Number",
      COD As "Code",
      Convert(varchar, DAT, 101) As "Date",
      Left(CAGE, 2) As House,
      DateDiff("d", DAT, VAL) As "Age",
      Sum( Case When NBR <> 0 Then 1 End) As "Total_Count",
      Avg(BW) AS "Weight",
      Avg([BW]/DateDiff("d", DAT, VAL)) As "ADG",
      Avg(BC) As AvgBC,
      Avg(FE) As AvgFe,
      Sum( Case When Stat1 = 'E' Then 1 End) As "Elites",
      Avg( Case When Stat1 = 'E' Then (BWT1) End) As "Avg_Weight_E",
      (Sum( Case When Defects1 like '%L%' Then 1 else 0 End)) As "%L",
      100*(Sum( Case When Def like '%T%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1 End)) As "%T",
      100*(Sum( Case When Def like '%K%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1 End)) As "%K",
      100*(Sum( Case When Def like '%R%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1 End)) As "%R",
      100*(Sum( Case When Def like '%V%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1 End)) As "%V",
      100*(Sum( Case When Def like '%D%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1 End)) As "%D",
      100*(Sum( Case When Def like '%S%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1 End)) As "%S"
FROM
      PSBRLEVLP
WHERE
      VAL <> ''
GROUP BY
      LINNBR,
      COD,
      DAT,
      Left(CAGE, 2),
      DateDiff("d", DAT, VAL)
0
Comment
Question by:Navicerts
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 15

Expert Comment

by:jdlambert1
ID: 12191741
You probably have some nulls, which sets it all null. Try substituting:

NULLIF(NBR, 0)

for

NBR
0
 
LVL 7

Author Comment

by:Navicerts
ID: 12191752
NBR is a keyed field that wont allow Null's
0
 
LVL 7

Author Comment

by:Navicerts
ID: 12191767
sorry,  you did mean i probally have null's in the NBR field right?
0
Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

 
LVL 17

Accepted Solution

by:
BillAn1 earned 500 total points
ID: 12191916
the SUM returns int, so SLQ treats the calculation as integers. You are dividng numerator by denom then multiplying by 100
e.g. 100 * ( 1234 / 1500) will give 100 * ( 0) = 0
try casting as floats (you can get away with only the numerator)

.....
   100.0 *( cast( Sum( Case When Def like '%T%' Then 1 else 0 End) as float) /Sum( Case When NBR <> 0 Then 1 End)) As "%T",
.....
0
 
LVL 34

Expert Comment

by:arbert
ID: 12191950
Possibly SQL Server's implicit conversion on the data type--try this:

100*(Sum( Case When Def like '%T%' Then 1 else 0 End)/Sum( Case When NBR <> 0 Then 1.00  End)) As "%T"
0
 
LVL 7

Author Comment

by:Navicerts
ID: 12193579
Cast worked great, thank you all for your input
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

JSON is being used more and more, besides XML, and you surely wanted to parse the data out into SQL instead of doing it in some Javascript. The below function in SQL Server can do the job for you, returning a quick table with the parsed data.
Ever needed a SQL 2008 Database replicated/mirrored/log shipped on another server but you can't take the downtime inflicted by initial snapshot or disconnect while T-logs are restored or mirror applied? You can use SQL Server Initialize from Backup…
Via a live example, show how to shrink a transaction log file down to a reasonable size.
Viewers will learn how to use the UPDATE and DELETE statements to change or remove existing data from their tables. Make a table: Update a specific column given a specific row using the UPDATE statement: Remove a set of values using the DELETE s…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question