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Arrange a Column of Database Table

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This section will provide you the facility for arranging the data of database table in ascending order.

Arrange a Column of Database Table

     

This section will provide you the facility for arranging the data of database table in ascending order. Firstly we should know what is the meaning of ascending order. The ascending order means an arrangement of data from smallest to largest number in sequence like: 3,6,8,19,21,......... Here we are going to give an example to arrange the data of a column in ascending order with the help of some java method and APIs. See detailed information below:

Description of program:

Firstly we are going to establish the connection with the MySQL database. After the connection has been established we need to give a table name and column name which have to be in ascending order. If data gets arranged in ascending order then shows "Ascending order of given column:" with it's arranged data and if any problem arises to in this process then shows a message "SQL statement is not executed!".

Description of code:

SELECT col_name FROM table_name ORDER BY col_name ASC :
This query shows data of a column in ascending order of the specific database table. 

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
ASC clause is used to arrange data in ascending order.

It takes column name and table name as its input. 
  col_name: This is a column name of a table which have to see in the ascending order.
  table_name: This is a table name.

Here is the code of program:

import java.io.*;
import java.sql.*;

public class ColumnAscOrder{
  public static void main(String[] args) {
  System.out.println("Ascending 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 ascending order:");
  String col_name = bf.readLine();
  ResultSet res = st.executeQuery
("SELECT "+col_name+" FROM "+table+" ORDER BY "+col_name+" ASC");
  System.out.println("Ascending 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 ColumnAscOrder.java

C:\vinod\jdbc\jdbc\jdbc-mysql>java ColumnAscOrder
Ascending order example!
Enter table name:
emp_sal
Enter column name which have to see ascending order:
Emp_sal
Ascending order of given column:
600
4500
5000
8000
10000
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Posted on: April 13, 2007

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