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7.8

Calculating the Percentage of the Row Total to the Grand Total

Asked by CharlesHWhite in MS SQL Server

Tags: calculate, sql

I want the sum of the Total column and will call it Grand Total. Then I want to calculate the percentage of the Total column against the Grand Total Column. I know the mathematical equation would look something like
(Total / Grand Total)*100 but I do not know how to translate that into SQL language.

I wrote the folowing query:
SELECT      dbo.Counts.Product,
SUM(CASE WHEN MONTH(dbo.counts.MfgDate)=1 then dbo.counts.[count] else 0 end) as JAN,
SUM(CASE WHEN MONTH(dbo.counts.MfgDate)=2 then dbo.counts.[count] else 0 end) as FEB,
SUM(CASE WHEN MONTH( dbo.counts.MfgDate)=3 then dbo.counts.[count] else 0 end) as MAR,
SUM(CASE WHEN MONTH(dbo.counts.MfgDate)=4 then dbo.counts.[count] else 0 end) as APR,
SUM(CASE WHEN MONTH(dbo.counts.MfgDate)=5 then dbo.counts .[count] else 0 end) as MAY,
SUM(CASE WHEN MONTH(dbo.counts.MfgDate)=6 then dbo.counts.[count] else 0 end) as JUN,
SUM(CASE WHEN YEAR(dbo.counts.MfgDate)=2006 then dbo.counts.[count] else 0 end) as Total,

Which gives me the following results:
Product            JAN      FEB      MAR      APR      MAY      JUN      Total
-------------------      ---      ---      ---      ---      ---      ---      ---
RED JELLY BEANS      0      0      1      0      0      0      1
BLUE JELLY BEANS      0      1      0      0      0      0      1
PURPLE Jelly Beans      11      5      0      0      0      0      16
BLACK JELLY BEANS      32      18      0      0      0      0      50
[+][-]02/15/06 03:54 PM, ID: 15966526

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About this solution

Zone: MS SQL Server
Tags: calculate, sql
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Solution Provided By: folderol
Participating Experts: 3
Solution Grade: A
 
 
[+][-]02/17/06 11:24 PM, ID: 15987587

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