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

ÈýÖÖSQL·ÖÒ³·¨¡¾×ªÌû¡¿

Ó¦Ò»¸öÅóÓѵÄÒªÇó£¬ÌùÉÏÊղصÄSQL³£Ó÷ÖÒ³µÄ°ì·¨¡«¡«

±íÖÐÖ÷¼ü±ØÐëΪ±êʶÁУ¬[ID] int IDENTITY (1,1)

1.·ÖÒ³·½°¸Ò»£º(ÀûÓÃNot InºÍSELECT TOP·ÖÒ³)

Óï¾äÐÎʽ£º 
SELECT TOP Ò³¼Ç¼ÊýÁ¿ *
from ±íÃû
WHERE (ID NOT IN
  (SELECT TOP (ÿҳÐÐÊý*(Ò³Êý-1)) ID
  from ±íÃû
  ORDER BY ID))
  ORDER BY ID
//×Ô¼º»¹¿ÉÒÔ¼ÓÉÏһЩ²éѯÌõ¼þ


Àý:
select top 2 *
from Sys_Material_Type
where (MT_ID not in
    (select top (2*(3-1)) MT_ID from Sys_Material_Type  order by MT_ID))
order by MT_ID



2.·ÖÒ³·½°¸¶þ£º(ÀûÓÃID´óÓÚ¶àÉÙºÍSELECT TOP·ÖÒ³£©

Óï¾äÐÎʽ£º
SELECT TOP ÿҳ¼Ç¼ÊýÁ¿ *
from ±íÃû
WHERE (ID >
          (SELECT MAX(id)
    from (SELECT TOP ÿҳÐÐÊý*Ò³Êý id  from ±í
          ORDER BY id) AS T)
      )
ORDER BY ID

Àý:
SELECT TOP 2 *
from Sys_Material_Type
WHERE (MT_ID >
          (SELECT MAX(MT_ID)
          from (SELECT TOP (2*(3-1)) MT_ID
                from Sys_Material_Type
                ORDER BY MT_ID) AS T))
ORDER BY MT_ID



3.·ÖÒ³·½°¸Èý£º(ÀûÓÃSQLµÄÓÎ±ê´æ´¢¹ý³Ì·ÖÒ³)
create  procedure SqlPager
@sqlstr nvarchar(4000), --²éѯ×Ö·û´®
@currentpage int, --µÚNÒ³
@pagesize int --ÿҳÐÐÊý
as
set nocount on
declare @P1 int, --P1ÊÇÓαêµÄid
@rowcount int
exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount output
select ceiling(1.0*@rowcount/@pagesize) as ×ÜÒ³Êý--,@rowcount as ×ÜÐÐÊý,@currentpage as µ±Ç°Ò³
set @currentpage=(@currentpage-1)*@pagesize+1
exec sp_cursorfetch @P1,16,@currentpage,@pagesize
exec sp_cursorclose @P1
set nocount off



4.×ܽá:
ÆäËüµÄ·½°¸£ºÈç¹ûûÓÐÖ÷¼ü£¬¿ÉÒÔÓÃÁÙʱ±í£¬


Ïà¹ØÎĵµ£º

SQL ´óÈ« ÐÄÓêÖ®¼Ò

1.°´ÐÕÊϱʻ­ÅÅÐò:
Select * from TableName Order By CustomerName Collate Chinese_PRC_Stroke_ci_as
2.Êý¾Ý¿â¼ÓÃÜ:
select encrypt('ԭʼÃÜÂë')
select pwdencrypt('ԭʼÃÜÂë')
select pwdcompare('ԭʼÃÜÂë','¼ÓÃܺóÃÜÂë') = 1--Ïàͬ£»·ñÔò²»Ïàͬ encrypt('ԭʼÃÜÂë')
select pwdencrypt('ԭʼÃÜÂë')
select pw ......

¶¯Ì¬SQL(Dynamic SQL)

----start
    ¶¯Ì¬SQLÊÇÔÚ³ÌÐòÔËÐÐʱ¹¹ÔìµÄ£¬ÒªÖ´Ðе¥ÌõSQL£¬Ê¹ÓÃEXECUTE IMMEDATE Óï¾ä£»µ±ÅúÁ¿Ö´ÐÐSQLʱ£¬ÏÈʹÓÃPREPARE Óï¾ä¹¹ÔìSQL£¬È»ºóʹÓÃEXECUTE Óï¾äÖ´ÐС£
Ò»£ºPrepareÓï¾ä£ºÓÃÀ´¹¹ÔìÅúÁ¿SQL
Óï·¨£º
PREPARE <sql-statement> [OUTPUT] INTO <result> [INPUT INTO] <input> ......

SQLÖÐÈçºÎÓÃÒ»¸ö±í¸üÐÂÁíÒ»¸ö±í

for ACCESS :
update a, b set a.name=b.name1 where a.id=b.id
for SQL Server:
"update a set a.name=b.name1 from a,b where a.id=b.id"
update   a   set   a.status=b.status  
  from   table1   a,table2   b  
&nbs ......

ÔÚSQL Server 2005ÖÐÓô洢¹ý³ÌʵÏÖËÑË÷¹¦ÄÜ


ÏÖÔںܶàÍøÕ¾¶¼ÌṩÁËÕ¾ÄÚµÄËÑË÷¹¦ÄÜ£¬Óеĺܼòµ¥ÔÚSQLÓï¾äÀï¼ÓÒ»¸öÌõ¼þÈ磺where names like ‘%words%’¾Í¿ÉÒÔʵÏÖ×î»ù±¾µÄËÑË÷ÁË¡£
    ÎÒÃÇÀ´¿´¿´¹¦ÄÜÇ¿´óÒ»µã£¬¸´ÔÓÒ»µãµÄËÑË÷ÊÇÈçºÎʵÏֵģ¨ÔÚSQL¡¡£Ó£Å£Ò£Ö£Å£Ò£²£°£°£¯£²£°£°£µÍ¨¹ý´æ´¢¹ý³ÌʵÏÖËÑË÷Ëã·¨£©¡£
    ÎÒÃÇ ......

SQL°²×°ÎÊÌâ ÎÞ·¨»ñÈ¡ASPNETÕË»§µÄϵͳÕË»§ÐÅÏ¢

°²×°SQL Server2005 ÎÊÌâÐÅÏ¢£º
“SQL Server °²×°³ÌÐòÎÞ·¨»ñÈ¡ ASPNET ÕÊ»§µÄϵͳÕÊ»§ÐÅÏ¢”
½â¾ö°ì·¨£º
ÓÃaspnet_regiisʵÓù¤¾ßÐ¶ÔØºÍÖØÐ°²×°Ò»Ï¾ͿÉÒÔÁË¡£
¾ßÌåµÄ²Ù×÷£º
1¡¢½øÈëCMD£º
C:\windows\microsoft.net\framework\v2.0.50727Îļþ¼ÐÏ£¬ÔËÐÐaspnet_regiis -uÐ¶ÔØ
È»ºóÔËÐÐaspnet_regiis -i Ö ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ