Sql Query in JSP

Hi All
Had a quick question about a SQL Query in a JSP - Can I duplicated an exact same record in a table with a new primary key without using the insert statement??
Say for example I have the following table:
OrderNo OrderName OrderType
======= ========== ========
1 Books Books
2 CDs CDs
3 DVDs DVDs
I want to make an exact copy of OrderNo 3 with new OrderNo 4, so that it will be something like:
4 DVDs DVDs
Any ideas friends??
Later

Thanks Nikki, you are right. Actually it is my fault, I framed the question in a wrong way. Well, I found out the solution for that and here is the answer
insert into [tablename] (OrderNo) select 42506 from [sametablename] where OrderNo=42405

Similar Messages

SQL query with JSP and WML-parameters

Hey,
Could you help me?
I'm trying to do the following. WML deck card 1 send parameter to same WML deck's card help. I try to read the parameter with JSP in card help by putting the parameter to SQL query, but it doesn't work. I can read the parameter with WML in card help. I can also print the value of the parameter with JSP if I generate WML with JSP.
/*parameter sending from card 1 to card help*/
out.println("<go href='#helpcard'>");
out.println("<setvar name='valittukurssi' value='$(valittukurssi)'/>");
/*parameter read with WML in card help */
<p>Valitse kurssi.
$valittukurssi</p>
/'parameter read with JSP by generating WML with JSP*/
out.println("<p>$valittukurssi</p>");
/* SQL query with JSP */
ResultSet uudettulokset = uusilause.executeQuery("select * from kurssi where lyhenne='$valittukurssi'");
Thanks,
Rampe

You're problem is easy to fix. You're confusing WML variables with JSP variables. See below:
>
/*parameter sending from card 1 to card help*/
out.println("<go href='#helpcard'>");
out.println("<setvar name='valittukurssi'
value='$(valittukurssi)'/>");
Above you set a var that will work on the phone, not in JSP.
/*parameter read with WML in card help */
<p>Valitse kurssi.
$valittukurssi</p>
Yes the above does display the parameter, because it is a client side WML var, but you cannot use this variable in the JSP code (that's why your SWL fails).
/'parameter read with JSP by generating WML with
JSP*/
out.println("<p>$valittukurssi</p>");Here's you're problem, the above line is EXACTLY the same as the one before it. When the container parses through this JSP code it translates the above line to:
<p>$valittukurssi</p> on the WML page and the CLIENT uses it's local variable to display it.
What you need and want is to have a variable that can be used in JSP code and output to your WML page. Here's how it's done:
out.println("<go href='#helpcard'>");
String some_name = "valittukurssi";
out.println("<setvar name='"+some_name+"'
value='$("+some_name+")'/>");
//note that you may have to escape the ( and ) with a \
//so we displayed the variable above into the WML page, now we can use it in the SQL query:
/* SQL query with JSP */
ResultSet uudettulokset =
uusilause.executeQuery("select * from kurssi where
lyhenne='"+some_name+"'");//the end of the command is: " ' " ) ;
Frank Krul
Got Node?

Handling sql query in jsp while extracing records from 3 tables

hi to one and all,
i want to implement the sql query given below in jsp in execute query statement . the query is working in sql but not when implemented using jsp. please help me in resolving this.
Query
SELECT e.Department , e.ETitle , s.basic , s.da, c.address1 , c.address2 from Employee e , Salary s , Contactdetails1 c where e.id = s.id and e.id =c.id

It would help if you gave us a little more info to go on like;
a) post your code
b) post the error message the compiler is giving you

SQL Query in JSP with variable problem

Researching this but I haven't found an answer yet. I want to pass a user variable to the SQL query. Anyone know how? Thought the form call out might work but it doesn't. Thanks!     <%
     String selectX = request.getParameter("choice");
     String pSQLStr = "SELECT asset, tenant FROM fritco WHERE asset = '::selectX::'";
          try
          Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          Connection con = DriverManager.getConnection("jdbc:odbc:MyDataSource", "username", "password");
          Statement stmt = con.createStatement();
          ResultSet result = stmt.executeQuery(pSQLStr);

Yes.
Use a Prepared Statement.
Saves you from sql injection attacks.
String selectX = request.getParameter("choice");
String pSQLStr = "SELECT asset, tenant FROM fritco WHERE asset = ?";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:MyDataSource", "username", "password");
PreparedStatement stmt = con.prepareStatement(pSQLStr);
stmt.setString(1, selectX);
ResultSet result = stmt.executeQuery(); Suggestions for improvements.
- Set up a JNDI datasource to retrieve your connection from. WIll do connection pooling for you, rather than creating a new DB connection each time.
- Don't have any sql code in your JSP at all - that should be in beans.
- If sql code MUST be in your JSP, use a taglib for it like the JSTL sql taglib
- Don't use scriptlet code (<% %>) in JSPs. If you want to run java code use beans/servlets.
Cheers,
evnafets

SQL QUERY IN JSP PAGE

Dear Friends,
There is a table named as EXPENSES having fields as sl_no, name.
I want to find the MAXIMUM value of the sl_no.
For that i am using the query as " SELECT MAX(sl_no) FROM EXPENSES "
In JSP file my code is ......................
ResultSet rs= stmt.executeQuery(" SELECT MAX(sl_no) FROM EXPENSES ");
if(rs.next()) {
out.println(rs.getInt("sl_no"));
this out.println line throws a exception as "column not found"
My aim is just to find the maximu value of a field from a table by using the jsp as a front end.
So please reply me how can I slove that problem.

It should work: ID must be a table field.
StringBuffer buf = new StringBuffer(1024);
Statement stmt = connection.createStatement();
String ID = "2";
String val = null;
if (app != null) {
buf.append("SELECT emp_name from table where ID = " + "'" +ID + "'");
rs = stmt.executeQuery(buf.toString());
while (rs != null && rs.next()) {
val = rs.getString(1);
}Message was edited by:
skp71

Sql query execution in jsp

can u help me to print multiple rows resulted from a sql query using jsp.

Map the ResultSet to a Collection of DTO's, use the JSTL's c:forEach tag to iterate through it inside a JSP page, use the HTML table, tr and td elements to present the data in a table.

Generate JSPs from SQL query

Hello all,
I am currently creating a web application that will allow a user to create a homepage from a template that is displayed to them. If the user is logging into the system for the first time, the template to create their homepage is displayed to them. However, if the user is logging in and has already used the template to set their homepage options, they are then forwarded to their homepage.
The users options for their homepage are stored in a database. The problem I am having is trying to generate the jsp page ( with HTML inside also ) using SQL statements that query the table that store the users options.
Eg. an SQL query queries the DB to see wht options the user has selected. Can anyone help me / advise me how to use these queries to generate the homepage. Thanks in advance!

Hi aniseed,
Thanks for a prompt reply.
So for example can you tell me if the following sample approach is ok.
<html>
<head>
<body>
<sql:query name="query">
SELECT * FROM SettingsTable WHERE links == "yes"
</sql:query>
<%-- Then to use this query result to insert selected hyperlinks that the user wants in their homepage, I would do the following ....... ? --%>
<% if (query.size() == 0)
<table>
<td>
<tr>
</tr>
</td>
</table>
%>
Thanks again

JSP Servlet and convert the result set of an SQL Query To XML file

Hi all
I have a problem to export my SQL query is resulty into an XML file I had fixed my servlet and JSP so that i can display all the records into my database and that the goal .Now I want to get the result set into JSP so that i can create an XML file from that result set from the jsp code.
thisis my servlet which will call the jsp page and the jsp just behind it.
//this is the servlet
import java.io.*;
import java.lang.reflect.Array;
import java.sql.*;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.naming.*;
import javax.sql.*;
public *class *Campaign *extends *HttpServlet
*private* *final* *static* Logger +log+ = Logger.+getLogger+(Campaign.*class*.getName());
*private* *final* *static* String +DATASOURCE_NAME+ = "jdbc/SampleDB";
*private* DataSource _dataSource;
*public* *void* setDataSource(DataSource dataSource)
_dataSource = dataSource;
*public* DataSource getDataSource()
*return* _dataSource;
*public* *void* init()
*throws* ServletException
*if* (_dataSource == *null*) {
*try* {
Context env = (Context) *new* InitialContext().lookup("java:comp/env");
_dataSource = (DataSource) env.lookup(+DATASOURCE_NAME+);
*if* (_dataSource == *null*)
*throw* *new* ServletException("`" + +DATASOURCE_NAME+ + "' is an unknown DataSource");
} *catch* (NamingException e) {
*throw* *new* ServletException(e);
protected *void *doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
Connection conn = *null*;
*try* {
conn = getDataSource().getConnection();
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select post_id,comments,postname from app.posts");
// out.println("Le résultat :<br>");
ArrayList <String> Lescomments= *new* ArrayList<String>();
ArrayList <String> Lesidentifiant = *new* ArrayList<String>();
ArrayList <String> Lesnoms = *new* ArrayList <String>();
*while* (rs.next()) {
Lescomments.add(rs.getString("comments"));
request.setAttribute("comments",Lescomments);
Lesidentifiant.add(rs.getString("post_id"));
request.setAttribute("id",Lesidentifiant);
Lesnoms.add(rs.getString("postname"));
request.setAttribute("nom",Lesnoms);
rs.close();
stmt.close();
*catch* (SQLException e) {
*finally* {
*try* {
*if* (conn != *null*)
conn.close();
*catch* (SQLException e) {
// les paramètres sont corrects - on envoie la page réponse
getServletContext().getRequestDispatcher("/Campaign.jsp").forward(request,response);
}///end of servlet
}///this is the jsp page called
<%@ page import="java.util.ArrayList" %>
<%
// on récupère les données
ArrayList nom=(ArrayList)request.getAttribute("nom");
ArrayList id=(ArrayList)request.getAttribute("id");
ArrayList comments=(ArrayList) request.getAttribute("comments");
%>
<html>
<head>
<title></title>
</head>
<body>
Liste des campagnes here i will create the xml file the problem is to display all rows
<hr>
<table>
<tr>
</tr>
<tr>
<td>Comment</td>
<td>
<%
for( int i=0;i<comments.size();i++){
out.print("<li>" + (String) comments.get(i) + "</li>\n");
}//for
%>
</tr>
<tr>
<td>nom</td>
<td>
<%
for( int i=0;i<nom.size();i++){
out.print("<li>" + (String) nom.get(i) + "</li>\n");
}//for
%>
</tr>
<tr>
<td>id</td>
<td>
<%
for( int i=0;i<id.size();i++){
out.print("<li>" + (String) id.get(i) + "</li>\n");
}//for
%>
</tr>
</table>
</body>
</html>
This is how i used to create an XML file in a JSP page only without JSP/SERVLET concept:
<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<%
// Identify a carriage return character for each output line
int iLf = 10;
char cLf = (*char*)iLf;
// Create a new empty binary file, which will content XML output
File outputFile = *new* File("C:\\Users\\user\\workspace1\\demo\\WebContent\\YourFileName.xml");
//outputFile.createNewFile();
FileWriter outfile = *new* FileWriter(outputFile);
// the header for XML file
outfile.write("<?xml version='1.0' encoding='ISO-8859-1'?>"+cLf);
try {
// Define connection string and make a connection to database
Connection conn = DriverManager.getConnection("jdbc:derby://localhost:1527/SAMPLE","app","app");
Statement stat = conn.createStatement();
// Create a recordset
ResultSet rset = stat.executeQuery("Select * From posts");
// Expecting at least one record
*if*( !rset.next() ) {
*throw* *new* IllegalArgumentException("No data found for the posts table");
outfile.write("<Table>"+cLf);
// Parse our recordset
// Parse our recordset
*while*(rset.next()) {
outfile.write("<posts>"+cLf);
outfile.write("<postname>" + rset.getString("postname") +"</postname>"+cLf);
outfile.write("<comments>" + rset.getString("comments") +"</comments>"+cLf);
outfile.write("</posts>"+cLf);
outfile.write("</Table>"+cLf);
// Everything must be closed
rset.close();
stat.close();
conn.close();
outfile.close();
catch( Exception er ) {
%>

Please state your problem that you are having more clearly so we can help.
I looked at your code I here are a few things you might consider:
It looks like you are putting freely typed-in comments from end-users into an xml document.
The problem with this is that the user may enter characters in his text that have special meaning
to xml and will have to be escaped correctly. Some of these characters are less than character, greater than character and ampersand character.
You may also have a similiar problem displaying them on your JSP page since there may be special characters that JSP has.
You will have to read up on how to deal with these special characters (I dont remember what the rules are). I seem to recall
if you use CDATA in your xml, you dont have to deal with those characters (I may be wrong).
When you finish writing your code, test it by entering all keyboard characters to make sure they are processed, stored in the database,
and re-displayed correctly.
Also, it looks like you are putting business logic in your JSP page (creating an xml file).
The JSP page is for displaying data ONLY and submitting back to a servlet. Put all your business logic in the servlet. Putting business logic in JSP is considered bad coding and will cause you many hours of headache trying to debug it. Also note: java scriptlets in a JSP page are only run when the JSP page is compiled into a servlet by java. It does not run after its compiled and therefore you cant call java functions after the JSP page is displayed to the client.

Pass jstl sql query result to jsp

Hi I have the following code which works perfectly
<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<sql:setDataSource dataSource="jdbc/dbtest"/>
<sql:query var="items" sql="SELECT * FROM homepagesubscriptions">
</sql:query>
<table border="0" align="center" valign="top">
<c:forEach var="row" items="${items.rows}" begin = "0" end="10" >
               <tr>
               <td>
                    <img src="${row.imgurl}" width="100" height = "100"></a>
               </td>
               <tr>
</c:forEach>
</table>   Now what I want is to perform the query in one page and then display the data in another, as such
index.jsp
<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
<sql:setDataSource dataSource="jdbc/dbtest"/>
<sql:query var="items" sql="SELECT * FROM homepagesubscriptions">
</sql:query>

    test.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="items" value="${resultBean}" />
<table border="0" align="center" valign="top">
<c:forEach var="row" items="${items.rows}" begin = "0" end="10" >
               <tr>
               <td>
                    <img src="${row.imgurl}" width="100" height = "100"></a>
               </td>
               <tr>
</c:forEach>
</table>   I know in index.jsp I can use jsp forward and usebean but am not sure how to? What type is the result from the query? thanks

Take a look at the "scope" attribute of the <sql:query> tag.
query.jsp:
<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
<sql:setDataSource dataSource="jdbc/dbtest"/>
<sql:query var="items" scope="request" sql="SELECT * FROM homepagesubscriptions"/>
<jsp:forward page="test.jsp" />and then test.jsp:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<table border="0" align="center" valign="top">
<c:forEach var="row" items="${items.rows}" begin = "0" end="10" >
               <tr>
               <td>
                    <img src="${row.imgurl}" width="100" height = "100"></a>
               </td>
               <tr>
</c:forEach>
</table>

How to find the backend SQL query of the JSP page in OIC

Does anybody how the best way to find the backend SQL QUERY of OIV JSP page?

How To Generate Trace Files in in HTML/JSP (using Profile Option)
      Note: This requires proper responsibility to set SQL Initialization statement using Profile option.
     Step 1.     Login to the desired Form application.
     Step 2.     Select +Profile >> System ('Find System Profile Values' screen will pop up)
     Step 3.     Check 'User' and Type in the Username (in which the account for that user will be trace)
     Step 4.     Type 'Initialization%' in the Profile box and Hit 'Find' (Click here for preview.)
     Step 5.     In the User box, type the following statement and Hit 'Save' (Click here for preview)
     BEGIN FND_CTL.FND_SESS_CTL('','','TRUE','TRUE','','ALTER SESSION SET TRACEFILE_IDENTIFIER = TESTING MAX_DUMP_FILE_SIZE = 5000000 EVENTS ='||''''||' 10046 TRACE NAME CONTEXT FOREVER, LEVEL 12'||'''');END;
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     Step 7.     Logout of HTML / JSP application once you completed with your flow.
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     Trace with Binds
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     Trace with Waits
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     Trace with Binds and Waits
     (Level 12)          Regular trace with both waits and binds information.
     Contains the most complete information and will produce the largest trace file.
****Send me an email to [email protected],I will share the document with you.

Use var of sql:query tag into a jsp fragment code

Hi, i'm spanish and my english is not very good XD.
I need to use some data from <sql:query> tag into code jsp <% %>
EXAMPLE:
<sql:query var="variable">
</sql:query>
<% what can i do to access to "variable" here????????? %>
i need to save in session (session.setAttribute(...)) a field of the response of the query saved in "variable"
i need help!!!!, thanks!!!!!!!!

i need to save in session (session.setAttribute(...)) a field of the response of the query saved in "variable"Why do you need java code to do this? If you are using JSTL sql tags, then why not keep using JSTL tags?
<c:set var="valueToSave" value="${variable.field}" scope="session"/>EL variables are actually already stored as attributes in scope.
So to get hold of "variable" you could use <%= pageContext.findAttribute("variable") %>
and that would give you the object stored by the EL.
cheers,
evnafets

Creating a directory via a jsp page sql query return

Is it possible to create a directory based on the results of a sql query?
i.e.
My sql query returns application number 1234 for a building application (BC for short).
Is it possible to create a directory /BC/1234
It is then proposed to use an iframe to look into the directory so users can place and access scanned documents which are captured during the approval process.
If so how?
An example would be great.
Jason

Sorry hope your still around I've been away for a while. We've created a samber share to the file server where the documents are stored and mounted it within the web file directory. It works ok if there is an existing directory but if there isn't we want it to be created when the page looks for the folder. I've done this with an asp page it basically did a directory exist test first then create folder if it didn't. The problem is can't find an example of how to do the directory exist test then directory create syntax so an example of both would be great

How to determine a sql query size to display a progress bar

I would like to show a progress of an sql query within a jsp page.
Background:
I have a reporting web application, where over 500 contacts can run reports based on different criteria such as date range....
I current display a message stating 'executng query please wait', however the users (hate users) do not seem to wait, thereofore they decide to run the query all over again which affected my reportign sever query size (eventually this crashes, stopping all reports)
Problem:
The progress bar is not a problem, how would I determine the size of the query at runtime therefore adding the time onto my progress bar.

Yes it's doable (we do it) but it sure ain't easy.
We've got about 23,500,000 features (and counting) in a geodata database. Precise spatial selection algorithms are expensive. Really expensive.
We cannot impose arbitrary limits on search criteria. If the client requires the whole database we are contractually obligated to provide it...
For online searches We use statistics to approximate the number of features which a given query is likely to return... more or less the same way that the query optimiser behind any half decent (not mysql (5 alteast)) database management system does.
We have a batch job which records how many features are linked to each distinct value of each search criteria... we just do the calculations (presuming a normal (flat) distribution) and...
... if the answer is more than a 100,000 we inform the user that the request must be "batched", and give them a form to fill out confirming there contact details. We run the extract overnight and send the user an email containing a link which allows them to download the result the next morning.
... if the answer is more than a million features we inform the user that the request must batched over the weekend... same deal as above, except we do it over the weekend to (a) discourage this; and (b) the official version ensure we have enough time to run the extract without impinging upon the maintenance window.
... if the answer is more than 5 million we display our brilliant "subscribe to our DVD service to get the latest version of the whole shebang every three months (or so), so you can kill your own blooody server with these ridiculous searches" form.
Edited by: corlettk on Dec 5, 2007 11:12 AM

SQL query with Java Server Pages

Hey,
I'm trying to read some information from database with SQL Query. How I can put the parameter that I get from previous *.jsp page to SQL query?
Technologies that I use are WML, JSP and MySQL.
I can get the parameter by method getParameter() and it is correct.
But how to but the requested parameter into sql query and complete the sql query?
Should I read it to some variable before putting it to sql query?
*/ this works fine */
out.println("<p>periodi"+request.getParameter("periodi"+"loppu</p>");
/* this doesn't work */
ResultSet tulokset = lause.executeQuery("select * from kurssi where periodi='+request.getParameter("periodi")+'");
/* this doesn't work */
String periodi=request.getParameter("periodi");
ResultSet tulokset = lause.executeQuery("select * from kurssi where periodi='periodi' '");
Thanks,
Rampe

Hey,
I'm trying to read some information from database
se with SQL Query. How I can put the parameter that I
get from previous *.jsp page to SQL query?
Technologies that I use are WML, JSP and MySQL.
I can get the parameter by method getParameter()
() and it is correct.
But how to but the requested parameter into sql
ql query and complete the sql query?
Should I read it to some variable before putting it
it to sql query?
*/ this works fine */
out.println("<p>periodi"+request.getParameter("periodi"
"loppu</p>");
/* this doesn't work */
ResultSet tulokset = lause.executeQuery("select * from
kurssi where
periodi='+request.getParameter("periodi")+'");
/* this doesn't work */
String periodi=request.getParameter("periodi");
ResultSet tulokset = lause.executeQuery("select *
* from kurssi where periodi='periodi' '");
Thanks,
RampeTry this
ResultSet tulokset = lause.executeQuery("select * from kurssi where periodi=" + "'" +request.getParameter("periodi")+"' " );this should work

SQL query with parameter returns empty result set, please help !!!

Hi there,
When I use the following query :
<sql:query var="beroepsthemas" >
select *
from beroepsthemas
where beroepsthemaid = ?
<sql:param value="12"/>
</sql:query>
When I want to browse the result set with :
<c:forEach items="${beroepsthemas.rows}" var="rij">
it shows no records. But it must return at least one.
All my jsp pages with sql queries and parameters have the same problem.
This is all on my test environment. I'm using Ubuntu 5.10, Netbeans5.0, JDK 1.5_06, application runs in Bundeled Tomcat 5.5.9, MySQL 4.1.12, mysql-connector3.1.6
When the same code is run on the live environment, it works just fine.
The difference is :
Mysql 4.1.10a, tomcat5.5.9, mysql-connector3.1.6
What can there be wrong !!

When the same code is run on the live environment, it
works just fine.
The difference is :
Mysql 4.1.10a, tomcat5.5.9, mysql-connector3.1.6
I didn't catch this. I think you may need to update the database driver.

Sql Query in JSP

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