Home Database Mysql Tutorial MySQL中基本操作(数据库创建,修改,删除,数据表创建,修改,

MySQL中基本操作(数据库创建,修改,删除,数据表创建,修改,

Jun 07, 2016 pm 03:25 PM
mysql Revise create delete Basic operations database data sheet

今天开始,自己开始了新的领域,开始学习SQL数据库,那么就从最基本开始吧~~追赶大神脚步,今天说说数据库基本操作 数据库操作 在MySQL的DOS环境下,完成这样的动作: show databases;create database example;showdatabases;show character set;alter datab

         今天开始,自己开始了新的领域,开始学习SQL数据库,那么就从最基本开始吧~~追赶大神脚步,今天说说数据库基本操作

        数据库操作

        在MySQL的DOS环境下,完成这样的动作:

      

show databases;
create database example;
showdatabases;
show character set;
alter databases example character set gbk;
drop database example;
show databases;
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从第一句开始,到最后一句的解释

1、就是察看已存在的数据库

2、创建一个名为example的数据库

3、再次显示已存在的数据库

4、察看所有的字符集

5、将数据库example的字符集改为gbk

6、删除example数据库

7、最终显示数据库


      数据表的操作

create database example;--创建example数据库
use example;--选择数据库
create table student
(
id int,
name varchar(20),
score double
);--创建一个名为student的数据表
show tables;--显示已存在数据表
alter table student
add chinese double;--数据表student中增加chinese列
alter table student
modify name verchar(200);--修改列
alter table student
change chinese math double;
desc student;--显示数据表student
drop table student;--删除数据表student
show tables;
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这些全部就是对数据库和数据表的基本操作,实验就清楚了~~
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