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ÐÞ¸Ä±í£ºalter table t1 rename t2
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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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ÐÞ¸´Êý¾Ý¿â£ºmysqlcheck -A -o -uroot -p54safer
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