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1.ÔÚDB14Êý¾Ý¿âÖн«ÁϼþºÅP44¿ªÍ·,²¢ÇÒÆ·ÃûΪ"ËÜÁÏ´ü"µÄÁϼþ¸ÄΪÏûºÄÐÔÁϼþ.
          Õâ¸ö¼òµ¥:  UPDATE DB14.ima_file SET ima70 = ‘Y’ WHERE ima01 like ‘P44%’ AND ima02 = ‘ËÜÁÏ´ü’;
2.ÔÚÒÔB021¿ªÍ·µÄ¹¤µ¥ÖÐ,ÏàÓ¦µÄϽéÁϼþµÄÏûºÄÐÔ״̬Ҳ×÷ÏàÓ¦±ä¸ü. Õâ¸öÂ鷳ɿ¼°bmb±íºÍima±í²ÅÄÜÈ·¶¨Òª¸ü¸ÄµÄ¼Ç¼(ÒòΪÏÞ¶¨ÁËÆ·Ãû).²»ÄÜÖ±½ÓÓÃUPDATE,×îºóдÁËÒ»¸ö´æ´¢¹ý³ÌÈçÏÂ:
DECLARE CURSOR my_table IS (SELECT bmb01,bmb03
  from DB14.bmb_file,DB14.ima_file
  WHERE bmb03 = ima01
  AND bmb01 LIKE 'B021%'
  AND bmb03 LIKE 'P44%' AND ima02 = 'ËÜÁÏ´ü'); 
  BEGIN 
    FOR tab IN my_table LOOP 
      UPDATE DB14.bmb_file 
             SET bmb15 = 'Y' 
             WHERE bmb01 = tab.bmb01 AND bmb03 = tab.bmb03; 
    END LOOP; 
  END;
ÕâÑùÒ»À´ÒªÊÇ»¹ÓÐÏàͬÌõ¼þÏÂµÄÆäËû±íÒª¸üÐµĻ°,¿ÉÖ±½ÓÔÚFOR LOOPÀïÃæ¼ÓÉÏ.
×îºó,ÆäʵÎÒÒ²ÊÇɵÁË.µ¥¾Í½â¾öÏÖÓÐÎÊÌâ¶øÑÔÍêÈ«¿ÉÒÔ:
  UPDATE DB14.bmb_file SET bmb15 = 'Y'
  WHERE bmb01 LIKE 'B021%'
                AND bmb03 IN (SELECT ima01
                                            from DB14.ima_file 
                                        


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    SQL> select to_char(sysdate,dd-mm-yyyy day) from dual;
    TO_CHAR(SYSDATE,
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