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TO_CHAR(SYSDATE,'Y')
--------------------
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SQL> Select to_char(sysdate,'YY') from dual;
TO_CHAR(SYSDATE,'YY')
---------------------
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SQL> Select to_char(sysdate,'YYY') from dual;
TO_CHAR(SYSDATE,'YYY')
----------------------
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2.Q ¼¾¶È 1¡«3ÔÂΪµÚÒ»¼¾¶È£¬2±íʾµÚ¶þ¼¾¶È¡£
SQL> Select to_char(sysdate,'Q') from dual;
TO_CHAR(SYSDATE,'Q')
--------------------
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3.MM Ô·ÝÊý
SQL> Select to_char(sysdate,'MM') from dual;
TO_CHAR(SYSDATE,'MM')
---------------------
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TO_CHAR(SYSDATE,'RM')
---------------------
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SQL> Select to_char(sysdate,'Month') from dual;
TO_CHAR(SYSDATE,'MONTH')
------------------------
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SQL> Select to_char(sysdate,'WW') from dual;
TO_CHAR(SYSDATE,'WW')
---------------------
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SQL> Select to_char(sysdate,'W') from dual;
TO_CHAR(SYSDATE,'W')
--------------------
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SQL> Select to_char(sysdate,'DDD') from dual;
TO_CHAR(SYSDATE,'DDD')
----------------------
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9. DD µ±Ôµڼ¸Ìì
SQL> Select to_char(sysdate,'DD') from dual;
TO_CHAR(SYSDATE,'DD')
---------------------
29
10.D ÖÜÄÚµÚ¼¸Ìì
SQL> Select to_char(sysdate,'D') from dual;
TO_CHAR(SYSDATE,'D')
--------------------
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SQL> Select to_char(sysdate,'DY') from dual;
TO_CHAR(SYSDATE,'DY')
---------------------
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SQL> Select to_char(sysdate,'HH') from dual;
TO_CHAR(SYSDATE,'HH')
---------------------
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SQL> Select to_char(sysdate,'HH24') from dual;
TO_CHAR(SYSDATE,'HH24')
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