进来了, 点个赞再走吧, 谢谢您了.
– 数据源
/* create database test50;
use test50;
create table Student(sid varchar(10),sname varchar(10),sage datetime,ssex nvarchar(10));
insert into Student values(‘01’ , ‘赵雷’ , ‘1990-01-01’ , ‘男’);
insert into Student values(‘02’ , ‘
