Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB
ÈÈÃűêÇ©£º c c# c++ asp asp.net linux php jsp java vb Python Ruby mysql sql access Sqlite sqlserver delphi javascript Oracle ajax wap mssql html css flash flex dreamweaver xml
 ×îÐÂÎÄÕ : sql

sqlµÄÒ»¸öʱ¼äÎÊÌâ¡£Âé·³¸ßÊÖ½â¾ö

<%=year(rs("adddate"))%>- <%

=month(rs("adddate"))%>- <%=day(rs("adddate"))%>
ÎÒÊÇÕâÑù»ñÈ¡µÄʱ¼ä¡£±¾À´°´Àí˵ûÎÊÌâµÄ¡£µ«ÊDz»ÖªµÀΪʲô»ñÈ¡µÄÊÇ12Ð¡Ê±ÖÆ»¹ÊÇʲô¡£
¾ÍÊÇÉÏÎç12µãÒ»¹ýËû¾Í±ä³ÉµÚ2ÌìµÄʱ¼äÁË¡£±¾À´ÊÇ7ºÅµÄ12:01·Ö¡£»ñÈ¡³öÀ´µÄÈÕÆÚȷʵ ......

ÇåÀíSQLÈÕÖ¾

ÎÒдһ¸öÇåÀíÈÕÖ¾µÄ
CREATE PROCEDURE dbo.ClearLog
AS
USE [ta]
GO
DBCC SHRINKDATABASE(N'ta')
GO

˵go´¦´íÎó,ºÍ²»ÔÊÐíʹÓÃuse database ÎªÊ²Ã´ÄØ?
ÒýÓÃ
ÎÒдһ¸öÇåÀíÈÕÖ¾µÄ
CREATE PROCEDURE dbo.ClearLog
AS
USE [ta]
GO
DBCC SHRINKDATABASE(N'ta')
GO
˵go´¦´íÎó,ºÍ²» ......

ÇóSQLÓï¾ä

table a
Êý¾ÝÏî
id num1 num2
1  1    0   
2  0    1 
3  1    1
num1 num2 Ö»ÄÜΪ 1»ò0
table b
id  t1  t2
1    0  0
2    10 10
3    1  0
t1 ,t2 ±íʾ idÎ ......

Ϊʲô»áÖ´ÐÐÁËÁ½´ÎÄØ?ÓësqlÓйØ

ÏÂÃæÊÇdaoµÄ·½·¨£º
public void insertstuSubject(int stuid, int subid, String date) {
// TODO Auto-generated method stub

String sql="insert into stusubject(studentid,subjectid,subbegin) values("+stuid+","+subid+","+date+")";
log.info("Ö´ÐÐÁ˲å ......

ÇëÎÊÒ»¾äSQLÔõôÀí½â?

ÓÐ2¸ö±ítableAºÍtableB, tableAÖв»Öظ´µØ¶¨ÒåÁËcid, tableBÖÐÓв¿·ÖtableAÖеÄcid±»µ÷ÓÃ,Ò²¾ÍÊÇ˵tableBÖеÄcidÊýÁ¿ÉÙÓÚtableA.

Õâ¾äSQL·µ»ØµÄ¼Ç¼ÊýÊÇtableAµÄÊýÁ¿,¶ø²»ÊÇtableBµÄ,²»¹ýÆäÖеÄin×Ó¾äÎÒ²»ÄÜÀí½â,Äܲ»ÄÜÇë´ó´óÃÇÓÃÎÄ×Ö½âÊÍÒ»ÏÂ?

select * from tableA
where tableA.cid in
(select tab ......

SQLÖбäÁ¿µÄÒÉ»ó

if(@tt25=1)
begin
print 'A'
select @t25=max(Qs) from Arn where A25=1 and Qs <@id
print 'B'
print @t25
if(@t25=Null)
begin
print 'C'
print @t25
print'D'
set @t25=0
print @t25
print 'E'
end
print 'F'
pr ......
×ܼǼÊý:3315; ×ÜÒ³Êý:553; ÿҳ6 Ìõ; Ê×Ò³ ÉÏÒ»Ò³ [203] [204] [205] [206] 207 [208] [209] [210] [211] [212]  ÏÂÒ»Ò³ βҳ
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ