Arrange a Column of Database Table

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

Arrange a Column of Database Table

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

Tutorials

  1. Mapping MySQL Data Types in Java
  2. Connecting to a MySQL Database in Java
  3. Creating a Database in MySQL
  4. Creating a Database Table
  5. Creating a MySQL Database Table to store Java Types
  6. Description of Database Table
  7. Deleting a Table from Database
  8. Retrieving Tables from a Database
  9. Inserting values in MySQL database table
  10. Retrieving All Rows from a Database Table
  11. Adding a New Column Name in Database Table
  12. Change Column Name of a Table
  13. Make Unique Column in Database Table
  14. Remove Unique Column in Database Table
  15. Arrange a Column of Database Table
  16. Arrange a Column of Database Table
  17. Sum of Column in a Database Table
  18. Deleting All Rows from a Database Table
  19. Delete a Specific Row from a Database Table
  20. Delete a Column from a Database Table
  21. Join tables in the specific database
  22. Join tables with the NATURAL LEFT JOIN operation
  23. Join tables with the NATURAL RIGHT JOIN operation
  24. Cross Join Tables in a Specific Database
  25. Prepared Statement Set Object
  26. Statement Batch Update
  27. Prepared Statement With Batch Update
  28. Select Records Using Prepared Statement
  29. Update Records using Prepared Statement
  30. Inserting Records using the Prepared Statement
  31. Count Records using the Prepared Statement
  32. Deleting Records using the Prepared Statement
  33. Using the Prepared Statement Twice
  34. Set Data Types by using Prepared Statement
  35. Set byte, short and long data types by using the Prepared Statement
  36. Prepared Statement Set Big Decimal
  37. Set Date by using the Prepared Statement
  38. Set Time by using the Prepared Statement
  39. Set Timestamp by using the Prepared Statement
  40. Copy Table in a MySQL Database