mysql修改联合主键
摘要:参考 https://blog.csdn.net/BockSong/article/details/80933477 alter table TABNAME drop primary key; alter table TABNAME add primary key(another_col,...);
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mysql允许某ip访问
摘要:grant all on *.* to databaseName@'ipAddress' identified by 'somePassword'; flush privileges;
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