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SQL code
/*²»Í¬·þÎñÆ÷Êý¾Ý¿âÖ®¼äµÄÊý¾Ý²Ù×÷*/
--´´½¨Á´½Ó·þÎñÆ÷
exec sp_addlinkedserver 'ITSV ', ' ', 'SQLOLEDB ', 'Ô¶³Ì·þÎñÆ÷Ãû ......

ÇóÒ»ÌõSQLÓï¾ä - MS-SQL Server / »ù´¡Àà

±íÃûnews ×Ö¶ÎID,TITLENAME 
×Ö¶ÎIDֵΪ 1, 4, 6, 7, 8
ÏÖÔÚÎÒÒªÇóÒ»ÌõSQLÓï¾äµÃµ½Ç°ÈýÐÐÓï¾äµÄµÚÈýÐмǼ Ò²¾ÍÊÇIDÊÇ6µÄÓï¾ä.select top 1 * from news order by id desc »¹ÓÐTOP 3£¨Ç°ÈýÐÐ) ÈçºÎ¼Èë £»±Ï¾¹ÎÒÓöµ½µÄÎÊÌâÊÇIDÊDz»ÖªµÀµÄ²ÎÊý£»²¢ÇÒֻȡһÐмǼ;
SQL code:
declare @n int
set @n=3
select ......

ÈçºÎдÕâ¸öSQLÓï¾ä¡£ - MS-SQL Server / ÒÉÄÑÎÊÌâ

ÎÒÓÐÒ»ÕÅSumTab±í£¬ÓÐ(ID,PValue,Description,DTime)Ëĸö×ֶΣ¬µ«ÊÇÀï±ß¼Ç¼ºÜ¶àÖØ¸´£¬ÎÒÏëд³ÉÏȰѼǼ°´Ê±¼äÅÅÐò£¬È»ºóÈ¡DTime×îв¢ÇÒÊÇ×îÏÈÓöµ½µÄÄÇÌõ¼Ç¼¡£¾ÍÊÇ˵IDÓкܶàÏàͬ£¬µ«ÊÇÎÒÖ»ÐèÒª×îеġ£
SQL code:
select
*
from
tb t
where
DTime=(select max(DTime) from tb where id=t.id)

SQL code: ......

SqlÓï¾ä³ö´í£¬ - Web ¿ª·¢ / ASP

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[Microsoft][ODBC Microsoft Access Driver] Óï·¨´íÎó (²Ù×÷·û¶ªÊ§) ÔÚ²éѯ±í´ïʽ 'Êýѧ + 4where ÐÕÃû='Íõ¾²'' ÖС£
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[code=VB][/code]
<html><body>
<%
if session("name") ......

ÈçºÎдÕâ¸öSQLÓï¾ä

SQL code:

create procedure Step1Trans as
begin
insert into SumTab select PointID ,PVValue,Description,convert(varchar(20),getdate(),120) from AnalogPoint
end
Go
AnalogpointÕâÕűíÀï±ßµÄID ÓÐD1031AHL1_VA£¬D1031AHL1_VB,D1031AHL1_VC£¬chp5£¬Õ⼸ÖÖÀàÐÍ¡£ÎÒÏÖÔÚÖ»ÏëÒªº¬¡°_¡±µÄ×ֶβåÈëµ½SumTab,Ôõà ......

Sql Group by ³öÎÊÌâÁË

SELECT I.S_FeeText,
SUM(I.F_PayMoney) AS F_FeeMoney
,T.DT_DataTime 
from dbo.T_FeeDocItem AS I INNER JOIN
  dbo.T_FeeDocTitel AS T ON T.S_SerialNO = I.S_SerialNO
GROUP BY I.S_FeeText,T.DT_DataTime
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ÔÓÖ§ 3.000 2010-04- ......
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