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1¡¢´´½¨Êý¾Ý¿âµÄʱºò£ºCREATE DATABASE `database`
                        CHARACTER SET 'utf8'
                         COLLATE 'utf8_general_ci';
2¡¢½¨±íµÄʱºò          CREATE TABLE `database_user` (
                        `ID` varchar(40) NOT NULL default '',
                        `UserID` varchar(40) NOT NULL default '',
                      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
3¡¢ÉèÖÃURLµÄʱºò       jdbc:mysql://localhost:3306/database?seUnicode=true&characterEncoding=UTF-8
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ÐÞ¸ÄÊý¾Ý¿âĬÈϱàÂëALTER DATABASE `test` DEFAULT CHARACTER SET utf8 COLLATE utf8_bin
Ð޸ıíµÄ±àÂ룺ALTER TABLE `category` DEFAULT CHARACTER SET utf8 COLLATE utf8_bin 
Ð޸ıí×ֶεıàÂëALTER TABLE `test` CHANGE `dd` `dd` VARCHAR
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alter table table_name
change colum_name colum_name varchar(50)
character set gbk collate gbk_chinese_ci
not null


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