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DÎÊ´ðROPTABLEadmin;

CREATETABÖ¹Ö½Á÷¹¥»**»ÏëҺͨÍõ´¨LEadmin(

usernamevarchar(20)NOT**LL,

passwordvarchar(20),

PRIMARYKEY(username)

);

IN**RTINTOadminVALUESÖÓ·Û('a','a');