在SQL Server中,查询course表中的前5行,正确的语法是( )
Aselect top 5 * from course
Bselect top (5) from course
Cselect top 5 from course
Dselect top (5*) from course
Aselect top 5 * from course
Bselect top (5) from course
Cselect top 5 from course
Dselect top (5*) from course