int, bigint, smallint, and tinyint
An exact numeric data type that uses integer data.
bigint
Integer data (all numbers) from -2^63 (-9223372036854775808) to 2^63-1 (9223372036854775807). The storage size is 8 bytes.
Int
Integer data (all numbers) from -2^31 (-2,147,483,648) to 2^31-1 (2,147,483,647). The storage size is 4 bytes. The SQL-92 synonymous word for int is integer.
smallint
Integer data from -2^15 (-32,768) to 2^15-1 (32,767). The storage size is 2 bytes.
tinyint
Integer data from 0 to 255. The storage size is 1 bytes.
Comments
Support for bigint data types where integer values are supported. However,bigint is used in some special cases when the integer value exceeds the range supported by the int data type, bigintcan be used. In SQL Server, theint data type is the primary integer data type.
In the data type precedence table,bigint is located between smallmoney and int .
The function returns bigintonly if the parameter expression is a bigint data type. SQL Server does not automatically promote other integer data types (tinyint,smallint , and int) to bigint.
SQL Server int, bigint, smallint, and tinyint