PostgreSQL 使用 delete 删除数据的时候关联多个表

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DELETE FROM game_pg_getpoint USING getpoint   
    WHERE (getpoint.fixflg = 1 OR game_pg_getpoint.immediately_flag=1)  
        AND game_pg_getpoint.memberid = getpoint.memberid  
        AND game_pg_getpoint.comment = getpoint.comment  
        AND game_pg_getpoint.thanksid = getpoint.thanksid  
        AND game_pg_getpoint.thanksname = getpoint.thanksname  
        AND game_pg_getpoint.getpoint_regist_date = getpoint.registdate