How can I find out how many rows a MySQL query returns in Java?
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I have counter for unique column in my table. Now I have list where I have column name (which is unique) and counter (which contains some integer value). I know that ... |
I have a domain object that looks something like this:
class UserStuff
{
String userid;
boolean primordial;
}
In the table, primordial is a TINYINT. A User can ... |
When I execute a query from my application (Java JDBC), it is returning the row with seq 83 first. But I want the row with seq 84.
seq | ...
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I'm using the following setup:
public MySQLProcessWriter(Connection con) throws SQLException {
String returnNames[] = {"processId","length","vertices"};
addresser = con.prepareStatement("INSERT INTO addressbook (length, vertices, activity) VALUES (?, ?, ?)", returnNames);
}
processId corresponds to an ... |
I'm using JDBC in sync with MySQL to add and define rows to a MySQL database's Table. The problem is that I don't know why it is throwing an Exception when ... |
Table
id int(11) No auto_increment Change ... |
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I have a Manager class that saves data in the SQL table and also get result from SQL table and test these data.when I run my program,one frame will be shown ... |
is there a way to write an sql query that finds all rows where the field value is a substring of a given string.
Example:
table names
Name | ...
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There are 1652487 rows in my table in MYSQL. I want to copy all the values corresponding to one field into a file. I wrote a java program in netbeans using ... |
I'm trying to get the new rating from an UPDATE statement in java
int userID = 99;
String sql = "UPDATE table SET rating=rating+1 WHERE user_REF="+userID;
statement.executeUpdate(sql);
I can just do another SELECT statement, but ... |
I am looking for a way to only insert when the row does not exist in MySQL, and update when the row exists AND the version of the existing row is ... |
I need sample code to read rows of data from a mysql table using java
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I'm using Ibatis 2.3.4 and Mysql 5.1.37, with mysql-java-connector 5.1.6 with java 1.6
I have query that returns very many rows from a single table. In order to do this the manual ... |
I'm trying to update values using JDBC and I continue to get the same error for different tables and with different schemas.
Let's say that I have a table like this
+----------------+-------------+------+-----+---------+-------+
| Field ...
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Hey, I'm used to ORM so I have huge absence of sql experience. I want to know what is the best way to insert a row into a table, that is ... |
I am wanting to update all the rows in the RESULTSET from the SELECT in one single UPDATE query.
Here is what I have come up with so far:
SELECT id_queue, status FROM ...
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I want to insert multiple rows into a MySQL table at once using Java. The number of rows is dynamic. In the past I was doing...
for (String element : array) {
...
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I'm using Java (jdbc) to interact with a MySQL database. I have table with a primary index which is AUTO INCREMENT. When I insert a row, I need to get the ... |
How to write a Java prepared statement for MySQL so that it would pick a row containing the highest Timestamp value from a column that would be greater from given parameter? ... |
I know there are similar questions to this one, but I haven't found any answer anywhere. For some reason ResultSet has no function to read the full row to a String ... |
i´m currently working on my first Java application based on a MySQL DB. I´m using EclipseLink2.0 and NetBeans, at the time i am facing a behaviour i cannot explain, maybe someone ... |
When returning results from a select query, does the ResultSet store all of the rows in memory? Or does it only fetch a limited amount of rows? Does it differ ... |
How can I insert into table1 like: INSERT INTO table1 (description) VALUES ('Some test description here'); and have it return the automatically incremented ID so that I can then insert a ... |
I'm trying to get the fields which value is not match base on the compared rows. It's hard to explain so I'll put the sample table and its results.
Table: orders
| ...
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At my application there is a table and I am inserting new rows that table. There is a Java class that gets a row(by a select query) from that table and ... |
How to get first row from ResultSet from query ( Java MySQL ) ?
I know how to iterate but how to get just first row ?
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I try to execute this request
window.requete ="INSERT INTO logfile VALUES(" + omsg.get_Creator() +","+ omsg.get_CreatorParent() +","+ omsg.get_SequenceNumber()+ ","+omsg.get_CreatorCost()+ ","+omsg.get_CreatorEnergy()+","+interval+","+lplinterval+ ","+omsg.get_Data()+"," + tmp2+")";
try { Statement stmt = window.connexion.createStatement();
int ...
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Anybody know what's wrong with my code? I am using a simple INSERT statement (as opposed to the regular PreparedStatement because I am trying to utilize mySQL's AES_ENCRYPT/DECRYPT functions. ... |
I have a table, say example1 and I'm using a jdbc statement to delete one of its rows. I have tried various methods, from delete from example1 where id = 1 ... |
i want to merge two rows and add a column to show the count of similar rows.
I don't want to update the table, i just want this as ... |
I'm not sure what this is called but it happens all the time that you get a resultset like:
(id,name,age,favorite)
0,John Smith,21,Pepperoni
1,John Smith,21,Ham
2,John Smith,21,Olives
3,John Doe,54,Tomatoes
4,John Doe,54,Potatoes
Now when you're iterating over this ... |
I'm trying to update the personal detail of a user through a java panel.Panel has fields like user_id(autogenerated),name,date of birth.
problem is when i enter nothing to the date of birth field ... |
I'm practicing the affablebean e-commerce tutorial, but I'm stuck in a error trying to persist data through mySQL workbench, this is the error I'm getting.
Error Code: 1452. Cannot add ... |
Hi I am new to mysql and java aswell. I want to store a jpeg files and hash values of small chunks of file. I have stored the hash values of ... |
So I'm having issues with my program. Basically this far the program is like a MySQL based chat. It stores messages in database and reads them. Im having problems with the ... |
I need to construct a single transaction / stored procedure that takes in two lists of foreign keys and inserts new rows into a table from those foreign keys.
Specifically, I have ... |
I m new to mysql and m trying to select N rows from a mysql table in eclipse. Now, i want to select N rows of same value from the database. ... |
MySql query returns wrong result list: the first row is repeated NetBeans Forums -> NetBeans Platform Users View previous topic :: View next topic Author Message Andre Uhres Joined: 19 Oct 2008 Posts: 3 Posted: Thu Sep 23, 2010 8:29 am ... |
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Hi all, I have been working japer reports within java. I have developed a report using jdbc in ireport. Now, I want to execute this report within my java programme. I am exporting this report in a .pdf file using, JasperPrint print = JasperFillManager.fillReport(jasperFileName, map, conn); Now, here is a little trouble. I have already generated report in ireport including headers ... |
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type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: javax.el.ELException: Error reading 'claims' on type com.webhomecover.beans.ClaimCollection org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause javax.el.ELException: Error reading 'claims' on type com.webhomecover.beans.ClaimCollection javax.el.BeanELResolver.getValue(BeanELResolver.java:66) javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53) org.apache.el.parser.AstValue.getValue(AstValue.java:118) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) org.apache.jasper****ntime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:925) org.apache.jsp.listclaims_jsp._jspx_meth_c_005fforEach_005f0(listclaims_jsp.java:125) org.apache.jsp.listclaims_jsp._jspService(listclaims_jsp.java:99) org.apache.jasper****ntime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause java.lang.NullPointerException com.webhomecover.dao.ClaimDAO.readClaims(Unknown Source) com.webhomecover.model.ModelFacade.getClaims(Unknown ... |
Stop wanting to know the number of rows, is the easiest way to deal with this question. The only reason you need to know the number of rows is that you are putting your data into an array. So stop using arrays and use a List, for which you don't need to know the size in advance. If this "DefaultTableModel" is ... |
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JTable tMovie; JMenuBar menu; JMenuItem List; JMenuItem New; JMenuItem Change; JMenuItem Delete; JMenuItem Om; DefaultTableModel tableMovie; Connection connection = null; public void init(){ this.setLayout(new BorderLayout()); //Menu menu = new JMenuBar(); JMenu menu1 = new JMenu("File"); JMenu menu2 = new JMenu("Help"); List = new JMenuItem("List movies"); New = new JMenuItem("New movie"); Change = new JMenuItem("Change movie"); Delete = new JMenuItem("Delete movie"); Om ... |
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