MySQL
TINYINT 127 SMALLINT 32767 MEDIUMINT 8388607 INT 2147483647 BIGINT 9,223,372,036,854,775,807
MSSQL
TINYINT 255 SMALLINT 32767 INT 2147483647 BIGINT 9,223,372,036,854,775,807
Reference
MSSQL
http://msdn.microsoft.com/en-us/library/aa258271(v=sql.80).aspx