问题
Is there a 4 byte unsigned int data type in MS SQL Server?
Am I forced to use a bigint?
回答1:
It doesn't seem so.
Here's an article describing how to create your own rules restricting an int to positive values. But that doesn't grant you positive values above 2^31-1.
http://www.julian-kuiters.id.au/article.php/sqlserver2005-unsigned-integer
回答2:
Can you just add/subtract 2,147,483,648 (2^31) to the regular int ? (subtract on the way in, & add coming out) I know it sounds silly, but if you declare a custom datatype that does this, it's integer arithmetic and very fast.... It just won't be readable directly from the table
回答3:
You can use bigint with checked the constraint, but datatype will still in 8 byte :(
回答4:
I used BINT(11) instead of INT(11), and it acts as UNSIGNED INT(11)
来源：https://stackoverflow.com/questions/306291/4-byte-unsigned-int-in-sql-server