2026-09-21 08:41:49 +08:00
|
|
|
show databases;
|
|
|
|
|
|
|
|
|
|
create database student_manage_system;
|
|
|
|
|
|
|
|
|
|
use student_manage_system;
|
|
|
|
|
|
|
|
|
|
show tables;
|
|
|
|
|
|
2026-09-22 15:32:34 +08:00
|
|
|
drop database student_manage_system;
|
|
|
|
|
|
2026-09-21 08:41:49 +08:00
|
|
|
drop table students;
|
|
|
|
|
|
2026-09-23 02:19:58 +08:00
|
|
|
select * from students limit 200;
|
|
|
|
|
|
|
|
|
|
select * from scores limit 200;
|
2026-09-21 08:41:49 +08:00
|
|
|
|
2026-09-23 03:53:57 +08:00
|
|
|
select * from address limit 200;
|
|
|
|
|
|
|
|
|
|
select * from classes limit 200;
|
|
|
|
|
|
|
|
|
|
select * from company limit 200;
|
|
|
|
|
|
|
|
|
|
select * from employments limit 200;
|
|
|
|
|
|
|
|
|
|
select * from teachers limit 200;
|
|
|
|
|
|
|
|
|
|
select * from subject limit 200;
|
|
|
|
|
|
2026-09-22 15:32:34 +08:00
|
|
|
|
2026-09-22 18:23:13 +08:00
|
|
|
|
2026-09-23 03:53:57 +08:00
|
|
|
# select *
|
|
|
|
|
# from cast(student_manage_system as BINARY)
|
|
|
|
|
# where age >30
|
|
|
|
|
# join on
|
|
|
|
|
# group by
|
|
|
|
|
# having
|
|
|
|
|
# order by
|
|
|
|
|
# limit
|