mysql删除数据表show_数据库与表显示、创建、删除
數(shù)據(jù)庫與表顯示、創(chuàng)建、刪除
數(shù)據(jù)庫顯示
show databases;
mysql>?show?databases;
+--------------------+
|?Database???????????|
+--------------------+
|?information_schema?|
|?app_blogcurder?????|
|?auth_demo??????????|
|?canzhieps??????????|
|?cmsdemo????????????|
|?mysql??????????????|
|?onethink???????????|
|?performance_schema?|
|?ranzhi?????????????|
|?thinkems???????????|
|?thinksns_3_1???????|
|?thinksns_4_0???????|
+--------------------+
12?rows?in?set?(0.01?sec)
創(chuàng)建數(shù)據(jù)庫
create database 庫名字;
mysql>?create?database?test;
Query?OK,?1?row?affected?(0.00?sec)
刪除數(shù)據(jù)庫
drop database [IF EXISTS] 庫名字;
mysql>?drop?database?test;
Query?OK,?0?rows?affected?(0.01?sec)
選中數(shù)據(jù)庫
use 庫名;
mysql>?use?mysql
Database?changed
mysql>?\s
--------------
mysql??Ver?14.14?Distrib?5.6.17,?for?Win64?(x86_64)
Connection?id:??????????8
Current?database:???????mysql
Current?user:???????????root@localhost
SSL:????????????????????Not?in?use
Using?delimiter:????????;
Server?version:?????????5.6.17?MySQL?Community?Server?(GPL)
顯示表
數(shù)據(jù)表
show tables;[需要縣選中數(shù)據(jù)庫]
mysql>?use?mysql
Database?changed
mysql>?show?tables;
+---------------------------+
|?Tables_in_mysql???????????|
+---------------------------+
|?columns_priv??????????????|
|?db????????????????????????|
|?event?????????????????????|
|?func??????????????????????|
|?general_log???????????????|
...?...
顯示表結(jié)構(gòu)
desc 表名; 或者 describe 表名;
mysql>?desc?db;
+-----------------------+---------------+------+-----+---------+-------+
|?Field?????????????????|?Type??????????|?Null?|?Key?|?Default?|?Extra?|
+-----------------------+---------------+------+-----+---------+-------+
|?Host??????????????????|?char(60)??????|?NO???|?PRI?|?????????|???????|
|?Db????????????????????|?char(64)??????|?NO???|?PRI?|?????????|???????|
|?User??????????????????|?char(16)??????|?NO???|?PRI?|?????????|???????|
...?...
表創(chuàng)建
CREATE?TABLE?`member`?(
`uid`?int(10)?unsigned?NOT?NULL?AUTO_INCREMENT?COMMENT?'用戶ID',
`nickname`?char(16)?NOT?NULL?DEFAULT?''?COMMENT?'昵稱',
`sex`?tinyint(3)?unsigned?NOT?NULL?DEFAULT?'0'?COMMENT?'性別',
`birthday`?date?NOT?NULL?DEFAULT?'0000-00-00'?COMMENT?'生日',
`qq`?char(10)?NOT?NULL?DEFAULT?''?COMMENT?'qq號(hào)',
`score`?mediumint(8)?NOT?NULL?DEFAULT?'0'?COMMENT?'用戶積分',
`login`?int(10)?unsigned?NOT?NULL?DEFAULT?'0'?COMMENT?'登錄次數(shù)',
`reg_ip`?bigint(20)?NOT?NULL?DEFAULT?'0'?COMMENT?'注冊(cè)IP',
`reg_time`?int(10)?unsigned?NOT?NULL?DEFAULT?'0'?COMMENT?'注冊(cè)時(shí)間',
`last_login_ip`?bigint(20)?NOT?NULL?DEFAULT?'0'?COMMENT?'最后登錄IP',
`last_login_time`?int(10)?unsigned?NOT?NULL?DEFAULT?'0'?COMMENT?'最后登錄時(shí)間',
`status`?tinyint(4)?NOT?NULL?DEFAULT?'0'?COMMENT?'會(huì)員狀態(tài)',
PRIMARY?KEY?(`uid`),
KEY?`status`?(`status`)
)?ENGINE=MyISAM?DEFAULT?CHARSET=utf8?COMMENT='會(huì)員表';
表刪除
drop table 表名;
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