rounding of decimals

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rounding of decimals

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skottikalapoodi

Posted Friday, September 26, 2008 5:36 AM

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Hi,

I am trying to insert some records into another table. In this case i tried two methods

a. bulk inserting from a text file
b. inserting from a Sql Table

however when i am bulk inserting data from sql table one of decimal field value is getting rounding off

examle

source 1.57857

destination 1.5786 ....if i insert from sql table
destination 1.5785 ....if i bulk insert from text file

I want to insert data from Sql table only, but without rounding off of numbers...

can anybody help me please

Post #576692

vyas

Posted Friday, September 26, 2008 6:11 AM

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If you datatype is money it will round off the 4th position after decimal.

Post #576722

skottikalapoodi

Posted Friday, September 26, 2008 6:26 AM

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MY DATA TYPE IS DECIMAL ONLY.

ACTUALLY WHAT I WANT IS, I DON'T WANT IT TO BE ROUNDED

Post #576734

Madhivanan-208264

Posted Friday, September 26, 2008 7:08 AM

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skottikalapoodi (9/26/2008)

MY DATA TYPE IS DECIMAL ONLY.

ACTUALLY WHAT I WANT IS, I DON'T WANT IT TO BE ROUNDED

Can you post the table structure?

Madhivanan

Failing to plan is Planning to fail

Post #576794

bitbucket-25253

Posted Friday, September 26, 2008 7:29 AM

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Remember what the definition of DECIMAL includes:

Precision is the number of digits in a number.
Scale is the number of digits to the right of the decimal point in a number.

For example:
DECLARE @Value DECIMAL(10,6)
DECLARE @Value2 DECIMAL(10,2)
DECLARE @Value5 DECIMAL(10,5)
SET @Value = 1.125456
SET @Value2 = @Value
SET @Value5 = @Value
SELECT @Value AS 'Scale of 6', @Value2 AS 'Scale of 2', @Value5 AS 'Scale of 5'
Results in:
Scale of 6 Scale of 2 Scale of 5
1.125456 1.13 1.12546

Check the definition of the column in your table to insure it has the correct scale value.

If everything seems to be going well, you have obviously overlooked something.

Ron

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Post #576825

Jeff Moden

Posted Saturday, September 27, 2008 7:14 PM

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skottikalapoodi (9/26/2008)

MY DATA TYPE IS DECIMAL ONLY.

ACTUALLY WHAT I WANT IS, I DON'T WANT IT TO BE ROUNDED

DECIMAL WHAT??? What is the actual datatype of the column being imported into?;)

--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."

For better, quicker answers on T-SQL questions, click on the following...
http://www.sqlservercentral.com/articles/Best+Practices/61537/

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Post #577358

Matt Miller (#4)

Posted Saturday, September 27, 2008 9:47 PM

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Assuming the data type is appropriate - you might have some luck forcing the Bulk insert or BCP to treat that column as a float through a format file (even if the actual destination column is not a float). That way - there's no attempt to round anything - it will just truncate instead.

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Post #577370

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