摘要:
1 select * from student 2 select * from score 3 --select * from grade 4 select * from course 5 select * from teacher 6 7 --1、 查询Student表中的所有记... 阅读全文
摘要:
1 select * from Nation2 select * from Info1 --连接(列的扩展)2 --把两个表连起来显示(第一种方法)3 select Info.Code,Info.Name,Info.Sex,Nation.Name as nation,Info.Birthday 4 ... 阅读全文