下載DBeaver數據庫可視化工具
命令記錄:
顯示所有數據庫:show databases;
查看數據庫信息:show create database mysql;
創建數據庫表:create database db1; 判斷表是否存在如果不存在新建:create database if not exists db1;
展示所有表:show tables;
創建表:create table student(
id?int,
name?varchar(32),
age?int,
score?double(4,1),//格式保留一位小數如99.9
birthDay?date,
operateTime?timestamp
);
查看表信息:desc student;
修改表名:alter table student rename to stu;
插入表數據:insert into stu(id,name) values(1,'張三');注意這里如果是指定表字段值則需要指明對應字段
如果不需要一一指定字段則需要按照順序填值,eg:insert into stu values(1,'張三',18,89.9,'1993-1-3',null);
刪除表字段:delete from stu where id=1;
查詢表數據:select * from stu;
更新表字段:update stu set age=20 where id=1;修改多個字段:update stu set age=20,name='ss',score=99.9 where id=1;