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sp_attach_db   'Êý¾Ý¿âÃû','Êý¾Ý¿âȫ·¾¶','Êý¾Ý¿âÈÕ־ȫ·¾¶'
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RESTORE FILELISTONLY from disk = '±¸·ÝÎļþ'
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restore database hzrb from disk = '±¸·ÝÎļþ'
with move 'Ö÷Âß¼­Ãû'     to '´æ·Åmdf·¾¶'   
,move 'ÈÕÖ¾Âß¼­Ãû' to '´æ·Åldf·¾¶'
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ALTER DATABASE NEW
MODIFY FILE(NAME='Old_Data',NEWNAME='New_Data')
GO
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ALTER DATABASE NEW
MODIFY FILE(NAME='Old_Log',NEWNAME='New_Log')
GO


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ORACLE PL/SQL ¶ÔÏó(object)ѧϰ±Ê¼Ç(Èý)

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INSTANTIABLE¹Ø¼ü×Ö±íʾÎÒÃÇ¿ÉÒÔ´Ó¸ÃÀàÐÍÖÐʵÀý»¯»òÕß´´½¨¶ÔÏ ......

SQLÓï¾äPART4

GRANT
Name
GRANT -- ¶¨Òå·ÃÎÊȨÏÞ
Synopsis GRANT { { SELECT | INSERT | UPDATE | DELETE | RULE | REFERENCES | TRIGGER }
    [,...] | ALL [ PRIVILEGES ] }
    ON [ TABLE ] tablename [, ...]
    TO { username | GROUP groupname | PUBLIC } [, ...] [ WI ......

SQLÓï¾äPART9

Group functions
SELECT [column,] group_function(column) ... from table [WHERE condition] [GROUP BY group_by_expression] [ORDER BY column];
e.g.:
SELECT department_id, job_id, SUM(salary), COUNT(employee_id) from employees GROUP BY department_id, job_id ;
SELECT [column,] group_function(column).. ......

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1.cross join È«ÍâÁ¬½Ó(µÑ¿¨¶û³Ë»ý)
SELECT A.*, B.* from A FULL OUTER JOIN B ON A.ID = B.ID
2.inner join ÄÚÁ¬½Ó(Ôڵѿ¨¶û³Ë»ýµÄ½á¹û¼¯ÖÐÈ¥µô²»·ûºÏÁ¬½ÓÌõ¼þµÄÐÐ)
SELECT A.* from A INNER JOIN B ON A.ID=B.ID
3.left outer join ×óÍâÁ¬½Ó(ÔÚinner joinµÄ½á¹ ......
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