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update query Sql server 2005

Posted on 2011-09-06
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Last Modified: 2012-06-21
I have the following table named SalesData

Shop  CurrSales  PriorSales    Sales Diff   SalesMiss  SalesNeg
1201   0                20000          -20000                
1202   10000        0                  10000
1203    25000      24000           1000
1204    32000      32200            -200

I am trying to write an update query that for each shop will do the following

      update SalesMiss with a Y if either    CurrSales or PriorSales    = 0.  Otherwise, should be set to  N
     
      update SalesNeg with A Y if  salesdiff is < 0.  Otherwise should be set to N  



Here is the result I am looking for


Shop  CurrSales  PriorSales    Sales Diff   SalesMiss  SalesNeg
1201   0                20000          -20000           Y              Y
1202   10000        0                  10000            Y               N    
1203    25000      24000           1000              N               N
1204    32000      32200            -200              N               Y



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Question by:johnnyg123
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3 Comments
 
LVL 18

Accepted Solution

by:
lludden earned 500 total points
ID: 36490661
Update SalesData
SET SalesMiss = CASE WHEN CurrSales = 0 OR PriorSales = 0 THEN 'Y' ELSE 'N' END,
SalesNeg = CASE WHEN SalesDiff < 0 THEN 'Y' ELSE 'N' END
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LVL 16

Expert Comment

by:brad2575
ID: 36490671
update sales data
set SalesMiss = CASE when currsales = 0 or priorsales = 0 then 'Y' ELSE 'N' END
SET SalesNeg = CASE WHEN salesdiff <0 THEN 'Y' ELSE 'N' END
0
 
LVL 16

Expert Comment

by:brad2575
ID: 36490677
lludden beat me by a little but same code :)
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