Use esta consulta:
with t (Dat, Year, Month, Day, Turn_1, Turn_2, Turn_3) as (
select sysdate, 2014, 08, 28, 'Foo', 'Bar', 'Xab' from dual
)
select dat, year, month, day, turn, source from t
unpivot (
source for turn in (Turn_1, Turn_2, Turn_3)
)
DAT YEAR MONTH DAY TURN SOURCE
----------------------------------------------
08/01/2014 2014 8 28 TURN_1 Foo
08/01/2014 2014 8 28 TURN_2 Bar
08/01/2014 2014 8 28 TURN_3 Xab
