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declare @begin datetime
declare @End datetime
set @begin=getdate()
   --Ö´ÐеÄÓï¾äдÔÚÕâÀï
set @End=getdate()
select datediff(millisecond,@begin,@End) as Ö´ÐеÄʱ¼ä
--millisecond±íʾºÁÃë Èç¹û¿´Ãë¿ÉÒÔʹÓÃss
C#:
ºÜ¶àʱºò£¬ÎÒÃǶÔ×Ô¼ºµÄ³ÌÐòµÄÆ¿¾±²»ÊǺÜÇå³þ¡£ÈçÒ»¸ö±¾µØÀàºÍÒ»¸öwebserviceÖ®¼äµÄµ÷Óõ½µ×ÊÇÓжà´óµÄÇø±ð¡£Ò³ÃæÕû¸öµÄÖ´ÐÐʱ¼äÔõôÑù¼à¿Ø¡£³ÌÐòÊÇÔÚÄǸöµØ·½»¯µÄʱ¼ä×¡£ÏÖÔÚÎҾͰÑ.NET2.0ÒÔºóµÄ¼à¿Ø·½·¨ËµÏ¡£ÆäʵºÜ¼òµ¥£¬Ö»ÒªÔÚSystem.Diagnostics ÖоÍÓÐÒ»¸ö¿ÉÒÔÖ±½ÓʹÓõÄÀà --Stopwatch¡£²»¶à˵ÁË¡£½«´úÂëÌù³öÀ´¡£
 protected void Page_Load(object sender, EventArgs e)
    {
        Stopwatch watch = new Stopwatch(); //ʵÀý»¯Ò»¸ö¼à¿Ø¶ÔÏó
        watch.Start();  //¿ªÊ¼¼à¿ØÒµÎñÂß¼­
        
        string a = null;
        for (int i = 0; i < 10000; i++)
        {
          a = i.ToString();
        }
        Thread.Sleep(10); //½«Ïß³ÌÑÓ³Ù10ºÁÃë¡£Ò»¸ö¶àÕâÑùµÄ²âÊÔ£¬¶àҪʹÓõ½Ï̷߳½Ãæ
        watch.Stop(); //½áÊø¼à¿Ø
        Response.Write(watch.ElapsedMilliseconds); //Êä³ö¼ÆÊ±½á¹û£¬µ¥Î»£ººÁÃë
    }


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joinleft outer join=left join ,   right outer join=right join,     inner jo ......

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¡¡¡¡DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
¡¡¡¡DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
¡¡¡¡DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
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CREATE DATABASE database-name
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begin tran
insert  testTable2 (aaa,bbb,ddd,ccc)
values ('jawefwao','jfowijef','jaiwejfo','civjoiw')
insert  testTable2 (aaa,bbb,ddd,ccc)
values ('jawefwao2','jfowijef2','jaiwejfo2','civjoiw2')
insert& ......

Á·Ï°ÐÐÁÐת»» sql server 2000

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--Date:2009-1-8
--sql server 2000
--ѧϰÐÐתÁУ¬ÎªÁ˽øÒ»²½Á˽⶯̬sqlÆ´½Ó£¨µ¥Ë«ÈýÒýºÅ£©
--¼¸ÖÖÀàÐÍ
--Numeric(10,2) Ö¸×Ö¶ÎÊÇÊý×ÖÐÍ,³¤¶ÈΪ10 СÊýΪÁ½Î»
--varcharºÍnvarcharµÄÇø±ð
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