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1. mysql -uroot  ;
2.mysql -h ip -ubusiusr -pbusiusr newdrmdb;
3.show databases ;                 //ÏÔʾËùÓеÄÊý¾Ý¿â ;
4.show tables ;                       //ÏÔʾËùÓеıí ;
5.set names gbk ;                   //ÉèÖÃ×Ö·û¼¯ ;
6.desc tmonthfees201004 ;    //ÏÔʾ±í½á¹¹ ;
7.alter table tcontents change cVersion cVersion varchar(128) null ;   //ÐÞ¸Ämysql±íÖÐ×ֶεÄÊôÐÔ ;
8. show index from tcontents from newdrmdb;
    show index from newdrmdb.tcontents ;
    show keys from tcontents ;                         
    show indexes from tcontents ;                     //²é¿´±íµÄË÷Òý ;