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SQL> select   sys_guid() from dual ;
SYS_GUID()
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Oracle Êý¾Ý¿â¼àÌýÅäÖÃ


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Oracle INTERVAL DAY TO SECONDÊý¾ÝÀàÐÍ

INTERVAL DAY TO SECONDÊý¾ÝÀàÐÍ
OracleÓï·¨:
INTERVAL '{ integer | integer time_expr | time_expr }'
{ { DAY | HOUR | MINUTE } [ ( leading_precision ) ]
| SECOND [ ( leading_precision [, fractional_seconds_precision ] ) ] }
[ TO { DAY | HOUR | MINUTE | SECOND [ (fractional_seconds_precision) ] } ......

oracle grant connect,resource to user°üÀ¨µÄȨÏÞ

http://hi.baidu.com/aku88168/blog/item/fa727454ec008553564e00e8.html
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