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How To Tweak Digit Length

Posted on 2010-09-01
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Last Modified: 2012-05-10
I have a bigINT column in SQL server where the digit length is 14. How and where can I tweak the digit length in SQL Server 2008. Would like this system created bigint column to default to 10 digits.
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Question by:jazzcatone
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LVL 32

Expert Comment

by:bhess1
ID: 33579358
If you want a specified number of digits, choose a DECIMAL column.   In SQL Server, a BigINT column is an 8-byte integer, which is good to 14 digits.

Alternately, you could apply conditions on the row to only allow values between 1000000000 and 9999999999, so other values would return errors.
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Accepted Solution

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ralmada earned 250 total points
ID: 33579364
You can convert it to varchar and truncate the digits
select left(cast(yourcol as varchar), 10)
or you can divide the bigint number by 10000
select yourcol / 10000
If that's not what you want, please clarify with an example
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Expert Comment

by:Blood
ID: 33579435
When you say "system created" do you mean you told it to create a new column called "X" and just took the default of bigINT or are you talking about some system column?
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LVL 58

Assisted Solution

by:cyberkiwi
cyberkiwi earned 250 total points
ID: 33584223
If you mean you have a bigint IDENTITY column, then a number cannot be definition have leading zeroes.
However, you can force it to start at 1 billion which is the smallest number with 10 digits.
You can reseed the identity using something like this

create table xy (i bigint identity(1,1), other varchar(10))
dbcc checkident(xy, reseed, 1000000000)
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