Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

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

SQLͳ¼Æ´óÈ«ÊÕ²Ø°æ ¸öÈËʹÓÃ

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 ......

db2 V8µÄÓйØSQL limits

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) ......

ɾ³ýÖظ´Êý¾ÝµÄsql·½·¨

±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 ......

JSP¿ª·¢Öеij£Óü¼ÇÉ

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¶ ......

java³ÌÐòÖе÷ÓÃÉãÏñͷʵÏÖjsp³ÌÐòÉãÏñÍ·Êý¾Ý²É¼¯

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 ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ