오라클에서 랜덤으로 데이터를 가져올때 사용한다. 

 
SELECT ROUND(DBMS_RANDOM.VALUE(1, 45),0) AS N1,
ROUND(DBMS_RANDOM.VALUE(1, 45),0) AS N2,
ROUND(DBMS_RANDOM.VALUE(1, 45),0) AS N3,
ROUND(DBMS_RANDOM.VALUE(1, 45),0) AS N4,
ROUND(DBMS_RANDOM.VALUE(1, 45),0) AS N5,
ROUND(DBMS_RANDOM.VALUE(1, 45),0) AS N6
FROM DUAL