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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
--ÐÞ¸ÄÊý¾Ý¿âµÄÂß¼ÎļþÃû£¨ÈÕÖ¾£©
ALTER DATABASE NEW
MODIFY FILE(NAME='Old_Log',NEWNAME='New_Log')
GO
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INSTANTIABLE¹Ø¼ü×Ö±íʾÎÒÃÇ¿ÉÒÔ´Ó¸ÃÀàÐÍÖÐʵÀý»¯»òÕß´´½¨¶ÔÏ ......
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 ......
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 ......