check if value is integer

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check if value is integer

newbie101

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August 26, 2009 at 6:57 pm

#225426

How do you check if the value is a whole number?
declare @a int, @b-2 int
set @a = 7
set @b-2 = 3
if(@a/@b)
PRINT 'is a whole number'
else
PRINT 'is not a whole number'

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OTF SSCertifiable Points: 6104 More actions · Answer 1

try this:

declare @a int, @b-2 int

set @a = 7

set @b-2 = 3

if((@a%@b)=0)

print 'is a whole number'

else

print 'is not a whole number'

newbie101 SSC-Addicted Points: 468 More actions · Answer 2

newbie101

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Points: 468

August 26, 2009 at 8:51 pm

#1045302

Thank you! 😀

OTF SSCertifiable Points: 6104 More actions · Answer 3

OTF

SSCertifiable

Points: 6104

August 26, 2009 at 8:56 pm

#1045309

Glad I could help.

The Dixie Flatline SSC Guru Points: 53354 More actions · Answer 4

One additional comment:

If you are ever working with FLOAT datatypes you can't use the modulo (%) operator. In that case, you can use ROUND with the truncate option to test the result.

declare @a float

declare @b-2 float

set @a = 6

set @b-2 = 3

select @a/@b as [a/b],ROUND(@a/@b,0) as [Round(A/B)],

case when @a/@b = ROUND(@a/@b,0) then 'Expression is a whole number.' else 'Expression is a fraction.' end as [result]

BUT, do NOT use ROUND for integers.

If @a and @b-2 are both integers then @a/@b will also be an integer.

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Umer Akram SSC-Insane Points: 22209 More actions · Answer 5

looks like a assignment question to me ... Or he is just so happy to get the answer 😛

ChrisM@Work SSC Guru Points: 186127 More actions · Answer 6

twin.devil (8/27/2013)
looks like a assignment question to me ... Or he is just so happy to get the answer 😛

Four years on...he's your tutor now.

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RandomEvent SSCrazy Points: 2963 More actions · Answer 7

Could also use the ISNUMERIC function to check that the data is an integer value.

Jeff Moden SSC Guru Points: 1004340 More actions · Answer 8

Jason.Reeves (8/27/2013)
Could also use the ISNUMERIC function to check that the data is an integer value.

Be careful, now. Please see the following article for why ISNUMERIC should never be used for an ISInteger or IsAllDigits function. It just wasn't designed for that.

http://www.sqlservercentral.com/articles/IsNumeric/71512/

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Sean Lange SSC Guru Points: 286590 More actions · Answer 9

Jeff Moden (8/27/2013)
Jason.Reeves (8/27/2013)
Could also use the ISNUMERIC function to check that the data is an integer value.
Be careful, now. Please see the following article for why ISNUMERIC should never be used for an ISInteger or IsAllDigits function. It just wasn't designed for that.
http://www.sqlservercentral.com/articles/IsNumeric/71512/

Not to mention that ISNUMERIC here just completely missed the point of the post. The OP was trying to determine if @a / @b-2 resulted in an integer. ISNUMERIC has it's shortcomings but has no relevance to this thread. 7/3.0 is not an integer but the result certainly is a number. 😉

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