select sname from student --年龄 where sage=(select max(sage) from student where snativeplace=(select snativeplace from (select snativeplace,count(*) s from student where ssex='男' group by snativeplace) where s=(select max(s) from (select snativeplace,count(*) s from student where ssex='男' group by snativeplace)))) --地区 and snativeplace=(select snativeplace from (select snativeplace,count(*) s from student where ssex='男' group by snativeplace) where s=(select max(s) from (select snativeplace,count(*) s from student where ssex='男' group by snativeplace)) );

您的问题是：查询年龄最大且地区人数最多的男生的姓名。

以下是查询语句：

SELECT sname 
FROM student
WHERE sage = (
    SELECT MAX(sage) 
    FROM student
    WHERE snativeplace = (
        SELECT snativeplace 
        FROM (
            SELECT snativeplace, COUNT(*) s 
            FROM student 
            WHERE ssex = '男' 
            GROUP BY snativeplace
        ) 
        WHERE s = (
            SELECT MAX(s) 
            FROM (
                SELECT snativeplace, COUNT(*) s 
                FROM student 
                WHERE ssex = '男' 
                GROUP BY snativeplace
            )
        )
    )
    AND snativeplace = (
        SELECT snativeplace 
        FROM (
            SELECT snativeplace, COUNT(*) s 
            FROM student 
            WHERE ssex = '男' 
            GROUP BY snativeplace
        ) 
        WHERE s = (
            SELECT MAX(s) 
            FROM (
                SELECT snativeplace, COUNT(*) s 
                FROM student 
                WHERE ssex = '男' 
                GROUP BY snativeplace
            )
        )
    )
);

这个查询语句会返回年龄最大且地区人数最多的男生的姓名。