Arrange a Column of Database Table

This section provides an example with code that arrange the records of database table in descending order.


 

Ads

Tutorials   
Change Column Name in MySQL Java Mysql Connection Example JDBC Example with MySQL Jdbc Mysql Connection String Jdbc Mysql Connection Url Getting Column Names from a database table in Java Count Rows from a Database Table JDBC Example with MySQL Write Text File to Table Inserting Image in Database Table Insert Data in Table Using Stored Procedure Copy One Database Table to Another Copy Table in a MySQL Database Set Timestamp by using the Prepared Statement Set Time by using the Prepared Statement Set Date by using the Prepared Statement Prepared Statement Set Big Decimal Set byte, short and long data types by using the Prepared Statement Set Data Types by using Prepared Statement Using the Prepared Statement Twice Deleting Records using the Prepared Statement Count Records using the Prepared Statement Inserting Records using the Prepared Statement Update Records using Prepared Statement Select Records Using Prepared Statement Prepared Statement With Batch Update Statement Batch Update Prepared Statement Set Object Cross Join Tables in a Specific Database Join tables with the NATURAL RIGHT JOIN operation Join tables with the NATURAL LEFT JOIN operation Join tables in the specific database Delete a Column from a Database Table Delete a Specific Row from a Database Table Deleting All Rows from a Database Table Sum of Column in a Database Table Arrange a Column of Database Table Arrange a Column of Database Table Remove Unique Column in Database Table Make Unique Column in Database Table Change Column Name of a Table Adding a New Column Name in Database Table Retrieving All Rows from a Database Table Inserting values in MySQL database table Retrieving Tables from a Database Deleting a Table from Database Description of Database Table Creating a MySQL Database Table to store Java Types Creating a Database Table Creating a Database in MySQL
Ads

Arrange a Column of Database Table

     

This section provides an example with code that arrange the records of database table in descending order. The descending order provides a way for arranging records from largest to smallest in a sequence like: 100,85,45,12,.........  See detail information below:

Description of program:

First of all in this program we are will establish the connection with MySQL database. As soon as the connection gets established it takes a table name and column name which we want to see in descending order. If the data gets arranged in descending order then it we are going to display the message "Descending order of given column:"...........  otherwise shows a message "SQL statement is not executed!".

Description of code:

SELECT   col_name  FROM   table_name   ORDER BY   col_name   DESC:
This query helps us  to arrange the records of database table in descending order.

The SELECT specifies the table columns that are retrieved. 
The
FROM clause tells from where the tables has been accessed. 
The
ORDER BY clause needed to us whenever, we want to sort the data of any column of the table.
The
DESC clause provides the facility to arrange the data in descending order (decrease order).

Here is the code of program:

import java.io.*;
import java.sql.*;

public class ColumnDescOrder{
  public static void main(String[] args) {
  System.out.println("Descending order example!");
  Connection con = null;
  try{
  Class.forName("com.mysql.jdbc.Driver");
  con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/jdbctutorial","root","root");
  try{
  Statement st = con.createStatement();
  BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
  System.out.println("Enter table name:");
  String table = bf.readLine();
  System.out.println("Enter column name which have to see descending order:");
  String col_name = bf.readLine();
  ResultSet res = st.executeQuery
("SELECT "+col_name+" FROM "+table+" ORDER BY "+col_name+" DESC");
  System.out.println("Descending order of given column:");
  while (res.next()){
  int col = res.getInt(1);
  System.out.println(col);
  }
  }
  catch (SQLException s){
  System.out.println("SQL statement is not executed!");
  }
  }
  catch (Exception e){
  e.printStackTrace();
  }
  }
} 

Download this example.

Output of program:

C:\vinod\jdbc\jdbc\jdbc-mysql>javac ColumnDescOrder.java

C:\vinod\jdbc\jdbc\jdbc-mysql>java ColumnDescOrder
Descending order example!
Enter table name:
emp_sal
Enter column name which have to see descending order:
Emp_sal
Descending order of given column:
10000
8000
5000
4500
600

Arrange a Column of Database Table

     

This section provides an example with code that arrange the records of database table in descending order. The descending order provides a way for arranging records from largest to smallest in a sequence like: 100,85,45,12,.........  See detail information below:

Description of program:

First of all in this program we are will establish the connection with MySQL database. As soon as the connection gets established it takes a table name and column name which we want to see in descending order. If the data gets arranged in descending order then it we are going to display the message "Descending order of given column:"...........  otherwise shows a message "SQL statement is not executed!".

Description of code:

SELECT   col_name  FROM   table_name   ORDER BY   col_name   DESC:
This query helps us  to arrange the records of database table in descending order.

The SELECT specifies the table columns that are retrieved. 
The
FROM clause tells from where the tables has been accessed. 
The
ORDER BY clause needed to us whenever, we want to sort the data of any column of the table.
The
DESC clause provides the facility to arrange the data in descending order (decrease order).

Here is the code of program:

import java.io.*;
import java.sql.*;

public class ColumnDescOrder{
  public static void main(String[] args) {
  System.out.println("Descending order example!");
  Connection con = null;
  try{
  Class.forName("com.mysql.jdbc.Driver");
  con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/jdbctutorial","root","root");
  try{
  Statement st = con.createStatement();
  BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
  System.out.println("Enter table name:");
  String table = bf.readLine();
  System.out.println("Enter column name which have to see descending order:");
  String col_name = bf.readLine();
  ResultSet res = st.executeQuery
("SELECT "+col_name+" FROM "+table+" ORDER BY "+col_name+" DESC");
  System.out.println("Descending order of given column:");
  while (res.next()){
  int col = res.getInt(1);
  System.out.println(col);
  }
  }
  catch (SQLException s){
  System.out.println("SQL statement is not executed!");
  }
  }
  catch (Exception e){
  e.printStackTrace();
  }
  }
} 

Download this example.

Output of program:

C:\vinod\jdbc\jdbc\jdbc-mysql>javac ColumnDescOrder.java

C:\vinod\jdbc\jdbc\jdbc-mysql>java ColumnDescOrder
Descending order example!
Enter table name:
emp_sal
Enter column name which have to see descending order:
Emp_sal
Descending order of given column:
10000
8000
5000
4500
600

Advertisements

Ads
Share on Google+Share on Google+

Arrange a Column of Database Table

Posted on: April 13, 2007 If you enjoyed this post then why not add us on Google+? Add us to your Circles

Advertisements

Ads
 

Discuss: Arrange a Column of Database Table  

Post your Comment


Your Name (*) :
Your Email :
Subject (*):
Your Comment (*):
  Reload Image
 
 
Comments:0

Ads

 

Ads