Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

sqlÌæ»»Óï¾ä

--·Ö½â×Ö·û´®°üº¬µÄÐÅÏ¢ÖµºóÈ»ºóºÏ²¢µ½ÁíÍâÒ»±íµÄÐÅÏ¢
--(°®Ð¾õÂÞ.ع»ª(Ê®°ËÄê·çÓê,ÊØµÃ±ùɽѩÁ«»¨¿ª)  2007-12-23  ¹ã¶«ÉîÛÚ)
/*ÎÊÌâÃèÊö
tba
ID  classid   name
1     1,2,3   Î÷·þ
2     2,3     ÖÐɽװ
3     1,3     Ãû¿ã
tbb
id   classname
1     Ò·þ
2     ÉÏÒÂ
3     ¿ã×Ó
ÎҵõĽá¹ûÊÇ
id   classname            name
1     Ò·þ,ÉÏÒÂ,¿ã×Ó      Î÷·þ
2     ÉÏÒ£¬¿ã×Ó          ÖÐɽװ
3     Ò·þ£¬¿ã×Ó          Ãû¿ã
*/
-----------------------------------------------------
--sql server 2000ÖеÄд·¨
create table tba(ID int,classid varchar(20),name varchar(10))
insert into tba values(1,'1,2,3','Î÷·þ')
insert into tba values(2,'2,3'  ,'ÖÐɽװ')
insert into tba values(3,'1,3'  ,'Ãû¿ã')
create table tbb(ID varchar(10), classname varchar(10))
insert into tbb values('1','Ò·þ')
insert into tbb values('2','ÉÏÒÂ')
insert into tbb values('3','¿ã×Ó')
go
--µÚ1ÖÖ·½·¨£¬´´½¨º¯ÊýÀ´ÏÔʾ
create function f_hb(@id varchar(10))
returns varchar(1000)
as
begin
  declare @str varchar(1000)
  set @str=''
  select @str=@str+','+[classname] from tbb where charindex(','+cast(id as varchar)+',',','+@id+',')>0
  return stuff(@str,1,1,'')
end
go
select id,classid=dbo.f_hb(classid),name from tba
drop function f_hb
/*
id          classid       name      
----------- ------------- ----------
1           Ò·þ,ÉÏÒÂ,¿ã×Ó Î÷·þ
2   &


Ïà¹ØÎĵµ£º

ADO.net£¬Linq to SQLºÍEntity FrameworkÐÔÄÜʵ²â·ÖÎö


ADO.net£¬Linq to SQLºÍEntity FrameworkÐÔÄÜʵ²â·ÖÎö
¡¡¡¡×î½üÎĵµÐ´Á˲»ÉÙ£¬µ¼ÖÂWordºÍExcelµÄʹÓÃÄÜÁ¦·ÉÒ»°ã³É³¤¡£¿¼Âǵ½ÏîÄ¿ÖжÁдÊý¾Ý¿âµÄ·½·¨´æÔÚЧÂʲ»¸ß£¬ÒÔÖÂÓ°ÏìÓû§ÌåÑéµÄÎÊÌ⣬¾ö¶¨²âÊÔÒ»ÏÂMicrosoftÐÂÍÆÐеÄLinqºÍEFÄܲ»ÄÜÔÚЧÂÊÉÏÓÐËù¸Ä½ø¡£
¡¡¡¡²âÊÔ»·¾³µ±È»¾ÍÊÇÎÒÕą̂±Ê¼Ç±¾ÁË£¬ÊÜÏÞÓëÓ²ÅÌתËÙ£¬ÔËÐÐÆð ......

SQLÖÐobject_idº¯ÊýµÄÓ÷¨

SQLÖÐobject_idº¯ÊýµÄÓ÷¨ ÊÕ²Ø
 int object_id('objectname');
´Ë·½·¨·µ»ØÊý¾Ý¿â¶ÔÏó±êʶºÅ¡£
ÆäÖУ¬²ÎÊýobjectname ±íʾҪʹÓõĶÔÏ󣬯äÊý¾ÝÀàÐÍΪnchar»òchar£¨Èç¹ûΪchar£¬ÏµÍ³½«Æäת»»Îªnchar£©
·µ»ØÀàÐÍΪint£¬±íʾ¸Ã¶ÔÏóÔÚϵͳÖеıàºÅ¡£
±ÈÈ磺
use wf_timesheet
select object_id('usp_check_excess ......

Êý¾ÝÅúÁ¿µ¼ÈëÔ¶³ÌSQL·þÎñÆ÷µÄÇ×Éíʵ¼ù

¡¡¡¡Ä¿µÄ£º½«Êý¾ÝÅúÁ¿µ¼ÈëÔ¶³Ì·þÎñÆ÷
¡¡¡¡»·¾³£ºSQLÈí¼þ£¬EXCELÈí¼þ£¬VS2005Èí¼þ£¬±¾µØÁ½¸ö»úÆ÷É϶¼ÓÐSQLÊý¾Ý¿â£¬¶øÇÒÊý¾Ý´æ·ÅÔÚÆäÖÐÒ»¸ö±í¡£
¡¡¡¡²Ù×÷ʵ¼ù
¡¡¡¡1¡¢ÓÃÔ¶³ÌÊý¾Ý¿âµÄip¡¢Óû§Ãû¡¢ÃÜÂëÔÚ±¾µØµÇ¼£»
¡¡¡¡2¡¢½á¹û£¬ÆäÖÐÒ»¸ö»úÆ÷ÄܵǼ£¬Ò»¸ö²»ÄܵǼ£¨ÒÔϲÙ×÷ÔڿɵǼµÄ»úÆ÷ÉÏÍê³É£©£»
¡¡¡¡3¡¢µÚÒ»´ÎÎÒÏëͨ ......

Êý¾Ý¿â×é¼þ Hxj.Data £¨Ê®£© £¨Êä³ö×é¼þÖ´ÐеÄsql£©

Ç°ÃæÓÐTXÁôÑÔÎÊ·ÖÒ³µÄsqlÊÇÔõôÑùµÄ£¬¿´ÍêÕâÆªÄãÒ²¾ÍÖªµÀÁË¡£ ×é¼þ¿ÉÒÔÊä³öÖ´ÐеÄsql£¬·½±ã²é¿´sqlÉú³ÉµÄÓï¾äÊÇ·ñÓÐÎÊÌâ¡£ ͨ¹ý×¢²áʼþÀ´Êä³ösql DbSession.Default.RegisterSqlLogger(database_OnLog);
 
private string sql;
void database_OnLog(string logMsg)
{
//±£´æÖ´ÐеÄDbCommand (sqlÓï ......

SQL֮ʮ profiler

Microsoft SQL Server Profiler ÊÇ SQL ¸ú×ÙµÄͼÐÎÓû§½çÃæ£¬ÓÃÓÚ¼àÊÓ Êý¾Ý¿âÒýÇæ»ò Analysis Services µÄʵÀý¡£Äú¿ÉÒÔ²¶»ñÓйØÃ¿¸öʼþµÄÊý¾Ý²¢½«Æä±£´æµ½Îļþ»ò±íÖй©ÒÔºó·ÖÎö¡£ÀýÈ磬¿ÉÒÔ¶ÔÉú²ú»·¾³½øÐмàÊÓ£¬Á˽âÄÄЩ´æ´¢¹ý³ÌÓÉÓÚÖ´ÐÐËÙ¶ÈÌ«ÂýÓ°ÏìÁËÐÔÄÜ¡£
¿ÉÒÔʹÓà SQL Server ProfilerÀ´´´½¨Ä£°å£¬¶¨ÒåÒª°üº¬ÔÚ¸ú×ÙÖ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ