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ɾ³ýÊÚȨ: revoke select,insert,update,delete om *.* from test2@localhost;
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ɾ³ý¿â£ºdrop database ¿âÃû;
ʹÓÿ⣺use ¿âÃû;
´´½¨±í£ºcreate table ±íÃû (×Ö¶ÎÉ趨Áбí);
ɾ³ý±í£ºdrop table ±íÃû;
ÐÞ¸Ä±í£ºalter table t1 rename t2
²éѯ±í£ºselect * from ±íÃû;
Çå¿Õ±í£ºdelete from ±íÃû;
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Ôö¼ÓÁУºALTER TABLE t2 ADD c INT UNSIGNED NOT NULL AUTO_INCREMENT,ADD INDEX (c);
ÐÞ¸ÄÁУºALTER TABLE t2 MODIFY a TINYINT NOT NULL, CHANGE b c CHAR(20);
ɾ³ýÁУºALTER TABLE t2 DROP COLUMN c;
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