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--´Ë´úÂëʵÏÖSQLÊý¾Ý¿âÔ¶³Ì±¸·Ý£¬·Åµ½×÷ÒµÀïÃæÖ´ÐпÉÒÔ×Ô¶¯±¸·ÝÊý¾Ý¿â¡¢×Ô¶¯É¾³ý@keepNDaysÌìÇ°±¸·Ý¡£
--´Ë´úÂ뽫±¾µØËùÓеÄÓû§Êý¾Ý¿â±¸·Ýµ½¹²ÏíĿ¼¡°\\backupServerIp\ShareName\Êý¾Ý¿â±¸·Ý¡±Ï¡£
--²¢É¾³ýÌìÇ°µÄ±¸·ÝÎļþ¡£Òª±¸·Ý³É¹¦±ØÐëÄܹ»¶Ô¹²ÏíĿ¼ÓвÙ×÷ȨÏÞ£¡

sp_configure 'xp_cmdshell',1
GO
RECONFIGURE
GO

--´´½¨Ó³Éä
execmaster..xp_cmdshell 'net use T: \\backupServerIp\ShareName "password" /user:uonun',NO_OUTPUT
GO

declare@keepNDays int,@s nvarchar(max),@del nvarchar(max)
select @keepNDays = 30,@backupSql='',@delSql=''

select
   @backupSql=@backupSql+
        char(13)+'DBCC SHRINKDATABASE(N'''+Name+''', 10, TRUNCATEONLY)'+    --ÊÕËõÊý¾Ý¿â
        char(13)+'backup database  '+quotename(Name)+'  to disk =''T:\Êý¾Ý¿â±¸·Ý\'+Name+'_'+convert(varchar(8),getdate(),112)+'.bak''  with init',    --±¸·ÝÊý¾Ý¿â
    @delSql=@delSql+
        char(13)+'exec master..xp_cmdshell '' del T:\Êý¾Ý¿â±¸·Ý\'+Name+'_'+convert(varchar(8),getdate()-@keepNDays,112)+'.bak'', NO_OUTPUT'   --ɾ³ý¹ýÆÚ±¸·Ý

frommaster..sysdatabases wheredbid>6 order bydbid asc   --²»±¸·ÝϵͳÊý¾Ý¿â(sql 2008)£¬Èç¹ûÊÇSql 2000£¬ÔòΪ¡°dbid>6¡±¡£

exec(@del)
exec(@s)
GO

--ɾ³ýÓ³Éä
execmaster..xp_cmdshell 'net use T: /delete', NO_OUTPUT
GO

sp_configure 'xp_cmdshell',0
GO
RECONFIGURE
GO


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MSSQL´æ´¢¹ý³ÌʵÀý

Create proc RegisterUser
(
@usrName varchar(30)
,@usrPasswd varchar(30)
,@age int
,@PhoneNum varchar(20)
,@Address varchar(50)
)
as
begin
--ÏÔʾ¶¨Òå²¢¿ªÊ¼Ò»¸öÊÂÎñ
begin tran
insert into user
(
userName
,userPasswd
)
values
(
@usrName
,@usrPassw ......

MSSQLµÄ¶à²ãǶÌײéѯ

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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 ......

.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  ......

½²½âMSSQLÊý¾Ý¿âÖÐSQLËø»úÖƺÍÊÂÎñ¸ôÀ뼶±ð

Ëø»úÖÆ
NOLOCKºÍREADPASTµÄÇø±ð¡£
1. ¿ªÆôÒ»¸öÊÂÎñÖ´ÐвåÈëÊý¾ÝµÄ²Ù×÷¡£
BEGIN TRAN t
INSERT INTO Customer
SELECT 'a','a'
2. Ö´ÐÐÒ»Ìõ²éѯÓï¾ä¡£
SELECT * from Customer WITH (NOLOCK)
½á¹ûÖÐÏÔʾ"a"ºÍ"a"¡£µ±1ÖÐÊÂÎñ»Ø¹öºó£¬ÄÇôa½«³ÉΪÔàÊý¾Ý¡£(×¢:1ÖеÄÊÂÎñδÌá½») ¡£NOLOCK±íÃ÷ûÓжÔÊý¾Ý±íÌí¼Ó¹²Ï ......

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: ......
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