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How to use SQL Server EE using CASE to evaluate date of datetime field

Posted on 2011-09-21
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Last Modified: 2012-05-12
Select
      CASE WHEN MyDateTime >= '20100101' AND <= '20110101' THEN 'Between 2010 01 01 AND 2011 01 01' END as Period
FROM TABLE
 
I realize it is something like:
trunc(MyDateTime) or LEFT(MyDateTime,8)
But not sure of the overall syntax..

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Question by:Jimmy_inc
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4 Comments
 
LVL 18

Expert Comment

by:lludden
ID: 36577146
CASE WHEN DATEPART(yyyy,MyDateTime) = 2010 THEN 'Between 2010 01 01 AND 2011 01 01' END as Period

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Accepted Solution

by:
lludden earned 500 total points
ID: 36577157
If you don't include an else, it will put nulls in

CASE WHEN DATEPART(yyyy,MyDateTime) = 2010 THEN 'Between 2010 01 01 AND 2011 01 01' ELSE 'Another Period' END as Period

Or

CASE WHEN MyDateTime BETWEEN '2010-01-01' AND '2011-01-01' THEN 'Between 2010 01 01 AND 2011 01 01' ELSE 'Another Period' END AS Period

You can add as many WHEN's as you want.
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Author Closing Comment

by:Jimmy_inc
ID: 36578335
Thanks
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LVL 5

Expert Comment

by:AlokJain0412
ID: 36578410

See Following is the Case When Syntex

CASE expression
  WHEN value1 THEN result1
  WHEN value2 THEN result2
  ...
  WHEN valueN THEN resultN
 
  [
    ELSE elseResult
  ]
END
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