jspÁ¬½Ósql2005
ÔÚ¹ÜÀí¹¤¾ßÀïÃæÓÐÊý¾ÝÔ´ Ñ¡ÔñsqlÊý¾ÝÔ´
ÔÚ´úÂëÖУº
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@page import="java.sql.*"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:Ybz");
Statement stat=con.createStatement();
ResultSet rs=stat.executeQuery("select * from [case] ");
//»òÕß
// PreparedStatement pstat=con.prepareStatement("select * from Êý¾Ý¿â±íµÄÃû³Æ where ID=?");
// pstat.setString(1,Öµ);
// ResultSet rs=pstat.executeQuery();
%>
<table border="1">
<%
while(rs.next())
{
%>
<tr>
<td>
<%=rs.getString(1)%>
&n
Ïà¹ØÎĵµ£º
ÎÄÕÂÀ´Ô´£ºIT¹¤³Ì¼¼ÊõÍø£¬ È«ÎÄÁ´½Ó£ºhttp://www.systhinker.com/html/81/n-11481.html
1.¼ÆËãÿ¸öÈ˵Ä×ܳɼ¨²¢ÅÅÃû
select name,sum(score) as allscore from stuscore group by name order by allscore
2.¼ÆËãÿ¸öÈ˵Ä×ܳɼ¨²¢ÅÅÃû
select distinct t1.name,t1.stuid,t2.allscore from stuscore t1,( select st ......
The following tables describe certain SQL
limits. Adhering to the most restrictive case can help the programmer
design application programs that are easily portable.
Table 7. Identifier Length Limits
Description
Limit in Bytes
Longest authorization
name (can only be single-byte characters) ......
±íÖÐÓÐһЩ¼Ç¼ÄÚÈÝÖظ´£¬Ò²¾ÍÊÇ˵ÕâЩ¼Ç¼³ýÁËID²»Í¬Ö®Í⣬ÆäËûµÄÐÅÏ¢¶¼Ïàͬ¡£ÐèÒª°ÑÖظ´µÄ¼Ç¼±£ÁôÒ»Ìõ£¬Ê£ÏµÄɾ³ý
--µÚÒ»ÖÖ·½·¨
delete from temp where id not IN (select min(id) from temp group by col1,col2)
--¶Ôcol1,col2£¬¼´ÒªÉ¾³ýµÄÊý¾Ýcol1,col2Á½¸öÁж¼Ïàͬ,ɾ³ýid´óµÄÐÐ
--µÚ¶þÖÖ·½·¨
with a as
(sel ......
ÔÚJSPÖй²ÏíÊý¾Ý£¬´óÌå·ÖΪ2ÖÐÇé¿ö¡£Ò»ÊÇÔÚͬһ¸öÓû§µÄ²»Í¬Ò³ÃæÖ®¼ä¹²ÏíÊý¾Ý£¬¶þÊÇÔÚ²»Í¬µÄÓû§Ö®¼ä¹²ÏíÊý¾Ý.
¶ÔÓÚͬһ¸öÓû§µÄ»á»°£¬ÒªÏëÔÚ²»Í¬µÄÒ³ÃæÖ®¼ä¹²ÏíÊý¾Ý£¬¿ÉÓÐÒÔϼ¸ÖÖÑ¡Ôñ
¡ñ°ÑÊý¾Ý±£´æÔÚSessionÖУ¨ÕâÊǷdz£³£¼ûµÄ·½Ê½£©¡£
¡ñͨ¹ýCookie.
¡ñͨ¹ýÒþº¬µÄ±íµ¥°ÑÊý¾Ý´«µ½ÏÂÒ»¸öÒ³Ãæ¡£
¡ñͨ¹ýServletContext¶ ......
½üÆÚµÄÒ»¸öÏîÄ¿ÐèҪʵÏÖÉãÏñͷͼÏñ²É¼¯£¬¾¹ýһϵÁеÄÕÛÌÚÒÔºó£¬ÖÕÓÚʵÏÖÁËÕâ¸ö¹¦ÄÜ£¬ÏÖÕûÀíһϡ£
±¾Éí¾Íjava¼¼ÊõÀ´Ëµ£¬ÒªÊµÏÖÉãÏñÍ·¶þ´Î¿ª·¢£¬²É¼¯ÉãÏñͷͼƬ£¬ÐèҪʹÓõ½JMF£¬JMFÊʺÏʹÓÃÔÚj2se³ÌÐòµ±ÖУ¬ÎÒÐèÒªÔÚweb³ÌÐòÖе÷ÓÃÉãÏñÍ·£¬ºÜÃ÷ÏÔJMFÊǸ㲻¶¨ÁË£¬Ïë¹ýдһ¸öapplet³ÌÐò£¬Ö»ÊÇÄǶ«Î÷ÒªÇó¿Í»§¶Ë±ØÐëÒªÓÐjre»·¾ ......