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create table  MAIN_NODE (
MLA_ID               INTEGER     not null        ,   //½ÚµãID
MLA_ROOTID          INTEGER,                      //¸ù½ÚµãID
MLA_PARENTID        INTEGER,                      //¸¸½ÚµãID
MLA_NAME            VARCHAR2(50),                //½ÚµãÃû³Æ
constraint P_mlaid primary key (MLA_ID) );
MLA_ID   MLA_PARENTID  MLA_ROOTID   MLA_NAME
1           0                   0             ¸¸½Úµã1     
2           1                   0            £¨¸¸½Úµã1µÄ/£©×Ó½Úµã1   
3            2                   0            £¨¸¸½Úµã1µÄ/×Ó½Úµã1µÄ/£©Ëï×Ó½Úµã1
4           0                   0   


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1.create user testa identified by testa;
2.alter user testa default tablespace users temporary tablespace temp;
3.grant connect to testa;
4.grant select any table to testa;
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