CREATE TABLE t
    (ENAME varchar(6), JANUARY int, FEBRUARY int, MARCH int, APRIL int)
;
    
INSERT INTO t VALUES  ('RASHMI', 20, 25, 30, 05);
INSERT INTO t VALUES ('SOUMYA', 11, 21, 09, 15);
INSERT INTO t VALUES ('BISWA', 17, 33, 19, 00);

select * from t
unpivot  (
  val for mth in (january as 'jan', february as 'feb', march as 'mar', april as 'apr')
);

ENAME   MTH  VAL  
RASHMI  jan  20   
RASHMI  feb  25   
RASHMI  mar  30   
RASHMI  apr  5    
SOUMYA  jan  11   
SOUMYA  feb  21   
SOUMYA  mar  9    
SOUMYA  apr  15   
BISWA   jan  17   
BISWA   feb  33   
BISWA   mar  19   
BISWA   apr  0

select * from (
  select * from t
  unpivot  (
    val for mth in (january as 'jan', february as 'feb', march as 'mar', april as 'apr')
  )
)
pivot (
  sum(val) as v for (ename) in ('RASHMI' as RASHMI, 'SOUMYA' as SOUMYA, 'BISWA' as BISWA)
);

MTH  RASHMI_V  SOUMYA_V  BISWA_V  
jan  20        11        17       
apr  5         15        0        
feb  25        21        33       
mar  30        9         19