Quick question what's the correct way to use ResultSet and PreparedStatement to access an ENUM field in MySQL?
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When I execute the following query on a database containing a table "comm_list" and a field "sr_no" of type "Int" in the table "comm_list", I get the correct resultset
SELECT MAX(sr_no) FROM ... |
It seems that the resultSet will be automatically closed when I close the Connection.
But I want to return the rs and use it in another method,then I don't know where to ... |
I need to resolve a bunch of column names to column indexes (so as to use some of the nice ResultSetMetaData methods). However, the only way that I know how to ... |
Lets say I have a really big table filled with lots of data (say, enough not to fit comfortably in memory), and I want to analyze a subset of the rows.
Is ... |
I have a Java application that uses a Statement to execute a query that should return about 100,000 records. I iterate over the ResultSet, calling the next method to retrieve each ... |
I am trying to run multiple MySQL queries which build up on each other: i.e field value of one element in each row is used as input for another query.
I end ... |
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I have a method in dao class called "getDetails". In this method, I union the two select statments from two tables with almost same field called "main shop" & "sub shops" ... |
I have a null pointer exception in
ResultSet rs = aStatement.executeQuery(Query); // it can't be executed
my code is like this :
public static boolean testLogin(String user, String password) throws SQLException ...
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I need help on how to scroll back to the next record on the resultset returned by java. I'm using mysql database.
Here is the code inside the formshow event. Where I ... |
This is the code I use:
package blobdatabase;
import java.nio.charset.Charset;
import java.sql.*;
/**
*
* @author Edson Lagamayo
*/
public class Main { ...
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Suppose we have this query:
ResultSet result = ("select * from table_name");
Now we can get information from result in this form
while(result.next())
{
.
.
.
}
but in this form we can ... |
So I've done a massive select on MySQL and got back a lot of data - which is ordered by index.
For example:
select * from nodes where config_id = 1;
Gives ... |
I have been having problems assigning the result of a SELECT COUNT(*) query to a Java variable. I am assigning the result of the query to a ResultSet. Then, I ... |
When I execute the following code, I get an exception. I think it is because I'm preparing in new statement with he same connection object. How should I rewrite this so ... |
My Requirement is to display some of the columns in one table and some of the columns in another table in an html table. Though it has same coloumn id , ... |
I have MySQL tables and I have to execute several queries on them. I created my connection with the DriverManager, initialized my statement (connection.createStatement()), built my query and executed my query: ... |
In my java program i want to copy javatable data and copied it in to the mysql table.for that i select one table and select the contents of it then copy.how ... |
I have a big ResultSet (getting from a JDBC query) of few thousand rows. Using each of these rows, I have to instantiate an Object, setting fields of it according to ... |
I am trying update a large set of rows (around 5M). I first came across the heap overflow issue of having so many rows fetched in a resultset. Since I don't ... |
I tried to write the following solution for my program:
There is a class QueryStatement(String stmt, ResultSet result) where
stmt is the Statement-String and result the returned ResultSet.
The implementation as it follows:
...
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I'm developing a website that will allow registered users to search through anywhere from 10-20 million records, and those records will be cross referenced against a number of in memory caches ... |
When I run a query it returns the following results
periodEndingDate | TotalMin | TimesheetId |
-------------------------------------------
2007-08-19 | 38.000 | ...
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I am using MySQL and Java to SELECT about 50000 records.
The strange thing is that when I use ResultSet and next() method to read the data, I see that the RAM ... |
I am writing a program that connect to MySQL and retrieve data form it. In my program user must enter the name and then it run sql query. But if the ... |
I am trying to use a Java application (which I do not have the source code for) to output the results of a call to a stored procedure into a text ... |
A database query returns a large ResultSet, and I would like to page the result, something like a cursor where I can choose how many results to retrieve and then in ... |
I am using JPivot that ships with Pentaho 3.8.0.stable.45256.
Whenever I try to drill down in a JPivot report it gives me Resultset Overflow Occurred. When I second time click on the ... |
In populating my database, I have the following field and method: private static final String SQL_SELECT_LAST_KEY = "SELECT last_insert_id() AS lastKey FROM term_ids"; ..... public void insertTerm(Statement stmt) { try{ stmt.executeUpdate("INSERT INTO " + TERM_IDS + " (accession, name, definition, ontology, description) VALUES ('" + accessionValue + "', '" + nameValue + "','" + definitionValue + "','" + ontologyValue + "','" ... |
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I'd be grateful for anyones help please :) I have written a java class to execute a MySQL stored procedure that does an UPDATE and then a SELECT. I want to handle the resultset from the SELECT AND get a count of the number of rows updated by the UPDATE. Even though several rows get updated by the stored proc, getUpdateCount() ... |
Hello all, I have two classes which interact with each other. Class A queries a MySQL DB and creates a ResultSet. Class B uses the ResultSet and displays it via GUI. I am looking for the most efficient (fast) way of handling this situation. Currently I obtain a ResultSet from Class A, using Class B. Following this I cycle through the ... |
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