Check given number

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Check given number

anandhakrishnabca-1021414

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Points: 242
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June 12, 2009 at 4:22 am

#205951

Hi,
I want to validate the given number. how to check for the following requirements in sql server 2005
1) how to check whether the given number is integer
2) how to check whether the given number is decimal
pls help me....

Viewing 7 posts - 1 through 6 (of 6 total)

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Lowell SSC Guru Points: 323518 More actions · Answer 1

here's the first way i thought of: compare the value to the convert(,int) of itself.

declare @number decimal(18,4)

Set @number = 10.0

--here's one way, compare the value to the integer conversion of itself.

IF number = convert(int,@number)

PRINT 'Can Be Integer'

ELSE 'Must Remain Decimal

Lowell

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Jeff Moden SSC Guru Points: 1004419 More actions · Answer 2

anandhakrishnabca (6/12/2009)
Hi,
I want to validate the given number. how to check for the following requirements in sql server 2005
1) how to check whether the given number is integer
2) how to check whether the given number is decimal
pls help me....

I'm curious... why do you need to do such a validation? What is the business rule behind it all?

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

John Hanrahan Hall of Fame Points: 3825 More actions · Answer 3

Jeff,

A business case for this might be inventory. In our case we had a clerk enter in an invalid unit of measure then she completed some transactions. This resulted in decimal places in our inventory when the items were 'whole'.

Specifically in our case the item comes in a pack of 6. The master case should have had 10 packs of 6 in it. Instead she said it had .44 of a pack in it.

John

Jeff Moden SSC Guru Points: 1004419 More actions · Answer 4

John Hanrahan (12/18/2015)
Jeff,
A business case for this might be inventory. In our case we had a clerk enter in an invalid unit of measure then she completed some transactions. This resulted in decimal places in our inventory when the items were 'whole'.
Specifically in our case the item comes in a pack of 6. The master case should have had 10 packs of 6 in it. Instead she said it had .44 of a pack in it.
John

What is the datatype of the "field" this entry was made to? I'm thinking that the front end would be the right place for this type of "business logic".

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

John Hanrahan Hall of Fame Points: 3825 More actions · Answer 5

The front end can only do so much to stop bad user action. We have some items which allow decimal places and some that don't. Our system has a check for that but only if the person who sets it up does so 'correctly'. Alas it is not done correctly every time.

Jeff Moden SSC Guru Points: 1004419 More actions · Answer 6

John Hanrahan (12/21/2015)
The front end can only do so much to stop bad user action. We have some items which allow decimal places and some that don't. Our system has a check for that but only if the person who sets it up does so 'correctly'. Alas it is not done correctly every time.

Agreed. With the idea of and simplicity of input data masking on the front end, I don't know why more people don't take advantage of such things for numeric and date/time "fields".

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)