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use master 
go 
--1) ´´½¨Êý¾Ý¿â(ԭʼÊý¾Ý¿âabc)
create database abc on(name='abc', filename='d:\abc_data.mdf') 
go 
--2) ÖØÃüÃûÊý¾Ý¿â(ÐÂÊý¾Ý¿âÃûabc2)
exec sp_renamedb abc, abc2
go 
--3) ÐÞ¸ÄÊý¾Ý¿âµÄÂß¼­Ãû³Æ
alter database abc2 modify file(name='abc_data', newname='abc2_data')
alter database abc2 modify file(name='abc_log',  newname='abc2_log')
--go
--4) ·ÖÀëÊý¾Ý¿â
exec sp_detach_db abc2
go 
--5) ÖØÃüÃûÊý¾Ý¿âÎïÀíÎļþ
exec xp_cmdshell 'rename  d:\abc_data.mdf abc2_data.mdf' 
exec xp_cmdshell 'rename  d:\abc_log.ldf  abc2_log.ldf' 
go 
--6) ¸½¼ÓÊý¾Ý¿â
exec sp_attach_db 'abc2', 'd:\abc2_data.mdf', 'd:\abc2_log.ldf'
go
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import java.io.File;
import org.apache.commons.io.FileUtils;
import java.net.URL;
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Ëæ»úÑ¡ÔñÐеÄSQLÓï¾ä? ORACLE SQLSERVER ECT.

MySQL:
SELECT column from table
ORDER BY RAND()
LIMIT 1
PostgreSQL:
SELECT column from table
ORDER BY RANDOM()
LIMIT 1
Microsoft SQL Server:
SELECT TOP 1 column from table
ORDER BY NEWID()
IBM DB2
SELECT column, RAND() as IDX
from table
ORDER BY IDX FETCH FIRST 1 ROWS ONLY
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-- @OrderType bit = 0, -- ÉèÖÃÅÅÐòÀàÐÍ, ·Ç 0 ÖµÔò½µÐò
-- @PageSize int = 10, -- ÿҳÓжàÉÙÌõ¼Ç¼
-- @PageIndex int = 1, -- µÚ ......
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