Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

MSSQL varbinaryת»»³É×Ö·û´®

--> Title  : varbinaryת»»³É×Ö·û´®
--> Author : wufeng4552
--> Date   : 2009-12-15
declare @s varchar(20),@bin varbinary(1000)
select @s='www.CSDN.net',@bin=cast(@s as varbinary(1000))
declare @re varchar(1000),@i int
select @re='',@i=datalength(@bin)
while @i>0
   begin
      select @re=substring('0123456789ABCDEF',substring(@bin,@i,1)/16+1,1)+
                 substring('0123456789ABCDEF',substring(@bin,@i,1)%16+1,1)+@re
             ,@i=@i-1  
   end
select '0x'+@re
select cast(@s as varbinary(1000))
/*
--------------------------
0x7777772E4353444E2E6E6574
 
(1 個資ÁÏÁÐÊܵ½Ó°響)
*/
/*
--------------------------
0x7777772E4353444E2E6E6574
 
(1 個資ÁÏÁÐÊܵ½Ó°響)
*/


Ïà¹ØÎĵµ£º

MSSQLµÄ¶à²ãǶÌײéѯ

½ñÌìÔÚÁÄÌìϵͳÖÐÐèҪϵͳִÐÐÒ»¸ö¶à²ãǶÌײéѯ¡£
Ò»¿ªÊ¼Óï¾äÈçÏÂ×ܳöÏÖ´íÎó£ºÔ­À´ÊÇÔÚ]='123') ºóÎÒ¶à¼ÓÁËÒ»¸ö as tb1
¸ÄΪÈçϺó£¬ÕýÈ·ÔËÐС£
select * from ( select top(10)  * from ( select top(100)  * from (select  [chatcontent].[senderid],[chatcontent].[id] ,[chatcontent].[toid] ,[chatc ......

MsSQL,MySQL,Oracle,Êý¾Ý¿âÁ¬½Ó×Ö¶Î

Ms sql 2000
drivername=com.microsoft.jdbc.sqlserver.SQLServerDriver
url=jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=books
username=sa
password=sa
MySQL
drivername=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost/books
username=root
password=root
Oracle
drivername=orac ......

.batÆô¶¯Êý¾Ý¿â·þÎñ(MSSQL,Oracle)

 @echo off
:dosmenu
REM Ñ¡Ôñ²Ëµ¥
echo  Windows ·þÎñÆô¶¯»ò¹Ø±Õ By hope 2008Äê2ÔÂ7ÈÕ     
echo.
echo [1]Æô¶¯Sql Server2005   [2]¹Ø±ÕSql Server2005
echo [3]Æô¶¯Oracle9i         [4]¹Ø±ÕOracle9i
echo.
echo  ......

How is MSSQL using memory?


How is MSSQL using memory?
http://www.sqlhacks.com/Administration/Memory-Usage
Memory is one the most important factor affecting MSSQL performance.
As an administrator, you should be monitoring the memory
regularly. When Microsoft SQL Server runs out of memory, it will use
virtual memory: ie: ......

MSSQLÊý¾Ý¿â²Ù×÷ʹÓÃÓï¾ä


1.°´ÐÕÊϱʻ­ÅÅÐò: 
Select * from TableName Order By CustomerName Collate Chinese_PRC_Stroke_ci_as 
2.·ÖÒ³SQLÓï¾ä 
select * from(select (row_number() OVER (ORDER BY tab.ID Desc)) as rownum,tab.* from ±íÃû As tab) As t where rownum between ÆðʼλÖà And ½áÊøλÖà
3.»ñÈ¡µ±Ç°Êý¾ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ