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show databases;
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create database dengheping;
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use dengheping;
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create table user(id int primary key auto_increment,name char(255));
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show tables;
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desc user;
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alter table user add password varchar(64);
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alter table user modify password varchar(64) not null;
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alter table user drop password;
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 alter database mybbs default character set 'gbk';


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SHELL>vi /etc/my.cnf
[mysql]
#no-auto-rehash
auto-rehash
SHELL>reboot mysqld
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