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ORCL190 =  //ºìÉ«²¿ÃÅΪÁ¬½Ó¼àÌýÃû×Ö
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.190)(PORT = 1521))  //ºìÉ«²¿ÃÅΪ·þÎñÆ÷ËùÔÚIPµØÖ· 1521Ϊ¶Ë¿ÚºÅ
    (CONNECT_DATA =
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SQL> Select to_char(sysdate,'Y') from dual;
TO_CHAR(SYSDATE,'Y')
--------------------
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SQL> Select to_char(sysdate,'YY') from dual;
TO_CHAR(SYSDATE,'YY')
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StationID    NUMBER(10) Primary key,
Year           NUMBER(4)  not null,
Month        NUMBER(2)  n ......

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select rownum, t.* from sm_t_pad_new t
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