TSQL CASE Statement Error SQLServer 7(Msg 8115, "Arithmetic overflow error converting numeric to data type numeric.")

SQLServer 7
Watch out for this one…

Statement Below Works
Select
CASE d.AmPmAll
WHEN 1 THEN 0.5
WHEN 2 THEN 0.5
WHEN 3 THEN 1.0 --CORRECT
END TimeOfDayNum
from  Dayoff d


Statement Below Fails
Select
CASE d.AmPmAll
WHEN 1 THEN 0.5
WHEN 2 THEN 0.5
WHEN 3 THEN 1 --INCORRECT
END TimeOfDayNum
from  Dayoff d

Server: Msg 8115, Level 16, State 8, Line 1
Arithmetic overflow error converting numeric to data type numeric.

The ".0" makes a big difference eh!

FYI - d.AmPmAll is a tinyint field; Posted to save someone else time.
GJPerkinsAsked:
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lauszCommented:
The problem is that you have to manage the same data type for all the case statement ..is for this taht you need to use 1.0-

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lauszCommented:
I tested your sample in sql 2000 and it works in the two ways. I don't know in 7.
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