查询所有姓“李”的学生所有成绩
SELECT r.Studentno AS '"李"同学学号',studentname AS '姓名',StudentResult AS '成绩' FROM result AS r INNER JOIN student AS s ON r.StudentNo=s.StudentNo AND studentname LIKE CONCAT('李','%')
SELECT r.Studentno AS '"李"同学学号',studentname AS '姓名',StudentResult AS '成绩' FROM result AS r INNER JOIN student AS s ON r.StudentNo=s.StudentNo AND studentname LIKE CONCAT('李','%')