CREATE INDEX emp_first_name_idx
ON copy_emp(first_name DESC);

SELECT * 
FROM copy_emp
ORDER BY first_name DESC;

SELECT last_name, TO_CHAR(hire_date, 'DD-Mon-yyyy')
from employees
WHERE TO_DATE(hire_date, 'DD-Mon-YYYY') < '01-Jan-1990';


Output:

LAST_NAME       TO_CHAR(HIRE_DATE,'DD-MON-YYYY')
-------------------------------------------------- 
King            17-Jun-1987 
Kochhar         21-Sep-1989 
De Haan         13-Jan-1993 
Hunold          03-Jan-1990

class ArrCreate
{
	public int[][] createArray()
	{
		int[][] s = new int[3][];
		s[0] = new int[4];
		s[1] = new int[2];
		for(int i = 0; i < s.length; i++)
		{
			for(int j=0; j < s[i].length; j++)
			{
				s[i][j] = j + 1;
			}
		}	
		return

class SwitchTest
{
	public static void main(String args[])
	{
		int x = 5;
		switch(x)
		{
			case 1:
				System.out.println("In 1st case");
			return ;
			case 3:
				System.out.println("In 3rd case");
			return ;
			case 5:
				System.out.println("In 5th case");
			return ;
			case 7:
				System.out.println("In

using namespace std;

System.out.println(3.2 + " 4.5");

# include <stdio.h>
void main()
{
   char str[] = "Zingle Bell Zingle Bell";
   printf("%.#s %.2s", str, str);
}