Please do write sql query for the output in the format

Question

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO MAXIMUM_SAL
7369 SMITH CLERK 7902 17-DEC-80 800 20 3000
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 3000
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 3000
7566 JONES MANAGER 7839 02-APR-81 2975 20 3000
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 3000
maximun salary of the all the employees should be displayed for each row of a employee record.

Answer 1

WITH L AS (
SELECT 100 EMPNO, 'RAJESH'  ENAME, 1000 SAL FROM DUAL
UNION
SELECT 200 EMPNO, 'VIJAYA'  ENAME, 4000 SAL FROM DUAL
UNION
SELECT 300 EMPNO, 'KUMAR'  ENAME, 1200 SAL FROM DUAL
UNION
SELECT 400 EMPNO, 'HARI'  ENAME, 100 SAL FROM DUAL
SELECT empno,  ENAME, SAL, MAX(SAL) OVER()  FROM L;
EMPNO                  ENAME  SAL                    MAX(SAL)OVER()        
100                    RAJESH 1000                   4000                  
200                    VIJAYA 4000                   4000                  
300                    KUMAR  1200                   4000                  
400                    HARI   100                    4000