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sudo apt-get install mysql-server
sudo apt-get install mysql-client
sudo apt-get install php5-mysql
// °²×°php5-mysql Êǽ«phpºÍmysqlÁ¬½ÓÆðÀ´
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sudo netstat -tap | grep mysql
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tcp 0 0 localhost.localdomain:mysql *:* LISTEN -
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sudo /etc/init.d/mysql restart
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$mysql -uroot -p ¹ÜÀíÔ±ÃÜÂë
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sudo mysqladmin -u root password newpassword


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<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
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alter table tabelname add new_field_id int(5) unsigned default 0 not null auto_increment ,add primary key (new_field_id);
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alter table t2 add d timestamp;
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GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH RIVILEGES;
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