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December 22, 2016 06:23
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| set password for 'root'@'localhost'=password('123456') | |
| RANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456'; | |
| alter table User rename user; | |
| show full columns from chat; #查看所有列 | |
| alter table chat modify column createtime bigint; #修改字段类型 |
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