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µ±OracleµÄ¶à¸ö´æ´¢¹ý³Ì¶¼Ê¹Óù«¹²µÄ³£Á¿Ê±£¬ÎÒÃÇ¿ÉÒÔ½¨Ò»¸öרÃŵÄpackageÓÃÀ´¹ÜÀíËùÓеij£Á¿¡£¶¨ÒåµÄʾÀý´óÖÂÈçÏ£º¡¡
create or replace package GLOBAL_CONSTANT is
  
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sql>SELECT username,PROFILE from dba_users;
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sql>SELECT * from dba_profiles s WHERE s.profile='DEFAULT' AND resource_name='PASSWORD_LIFE_TIME';
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ORACLEµÄ·ÖÇø(Partitioning Option)ÊÇÒ»ÖÖ´¦Àí³¬´óÐͱíµÄ¼¼Êõ¡£·ÖÇøÊÇÒ»ÖÖ“·Ö¶øÖÎÖ®”µÄ¼¼Êõ£¬Í¨¹ý½«´ó±íºÍË÷Òý·Ö³É¿ÉÒÔ¹ÜÀíµÄС¿é£¬´Ó¶ø±ÜÃâÁ˶Ôÿ¸ö±í×÷Ϊһ¸ö´óµÄ¡¢µ¥¶ÀµÄ¶ÔÏó½øÐйÜÀí£¬Îª´óÁ¿Êý¾ÝÌṩÁË¿ÉÉìËõµÄÐÔÄÜ¡£·ÖÇøÍ¨¹ý½«²Ù×÷·ÖÅ䏸¸üСµÄ´æ´¢µ¥Ôª£¬¼õÉÙÁËÐèÒª½øÐйÜÀí²Ù×÷µÄʱ¼ä£¬²¢Í¨¹ýÔöÇ¿µÄ²¢Ðд ......

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sal>(select sal from emp where name="SMITH");
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    select e1.ename,e2.ename from
emp e1,emp e2 where e1.mgr=e2.empno(+);
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