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How do I convert an integer to tinyint within my VB.NET code?

Posted on 2006-06-26
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Last Modified: 2008-01-09
I'm trying to run an INSERT statement, but I need to convert a regular integer to a tinyint.
How do I do that?


I tried using CAST(# as tinyint), but I receive an error.
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Question by:winterhowl
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8 Comments
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 16986287
>>I tried using CAST(# as tinyint), but I receive an error.<<
You will get an error if the integer is greater than 256.
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LVL 75

Expert Comment

by:Anthony Perkins
ID: 16986322
Actually that should have read greater than 255 and the error is:
Arithmetic overflow error for data type tinyint, value = 256.

If you do not care what value is inserted when greater than 255, you can do something like this:
CAST(YourIntegerValue % 256 As tinyint)
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Author Comment

by:winterhowl
ID: 16986597
Actually, I was trying to convert 0 when I received the error.
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LVL 75

Expert Comment

by:Anthony Perkins
ID: 16987467
Works fine for me:

Declare @X integer, @Y tinyint
Set @X = 0
Set @Y = CAST(@X as tinyint)
Select @Y

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Accepted Solution

by:
Lowfatspread earned 400 total points
ID: 16991529
as long as the value is less than 256 you shouldn't need to convert SQL will do that automatically...

if the number is > 255 then your logic has an error..
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Author Comment

by:winterhowl
ID: 17002410
I couldn't get any of the CONVERT or CAST to work, but once I removed them, everything works fine.
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LVL 75

Expert Comment

by:Anthony Perkins
ID: 17002747
>>I couldn't get any of the CONVERT or CAST to work<<
You do of course realize that CONVERT and CAST are T-SQL functions and not VB.NET functions, right?
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Author Comment

by:winterhowl
ID: 17008784
Yes.  I was using them in the SQL I was using to get data from our database.
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