OCP 1Z0 051 19

19. Evaluate the following query: 
SELECT INTERVAL '300' MONTH, 
INTERVAL '54-2' YEAR TO MONTH, 
INTERVAL '11:12:10.1234567' HOUR TO SECOND 
FROM dual; 
What is the correct output of the above query? 
A. +25-00 , +54-02, +00 11:12:10.123457  
B. +00-300, +54-02, +00 11:12:10.123457 
C. +25-00 , +00-650, +00 11:12:10.123457 
D. +00-300 , +00-650, +00 11:12:10.123457 
考点：INTERVAL
注意下面各语句的返回格式

SQL> select INTERVAL '20' year as "year" from dual;
year
---------------------------------------
+20-00
1 row selected

SQL> select INTERVAL '30' month as "month" from dual;
month
---------------------------------------
+02-06
1 row selected

SQL> select INTERVAL '90' day as "day" from dual;
day
---------------------------------------
+90 00:00:00
1 row selected

SQL> select INTERVAL '72' hour as "hour" from dual;
hour
---------------------------------------
+03 00:00:00
1 row selected

SQL> select INTERVAL '80' minute as "minute" from dual;
minute
---------------------------------------
+00 01:20:00
1 row selected
Executed in 0.015 seconds
SQL> select INTERVAL '3.15' second as "second" from dual;
second
---------------------------------------
+00 00:00:03.150000
1 row selected

SQL> select INTERVAL '2 12:30:59' DAY to second as "DAY to second" from dual;
DAY to second
---------------------------------------
+02 12:30:59.000000
1 row selected

SQL> select INTERVAL '13-3' year to month as "Year to month" from dual;
Year to month
---------------------------------------
+13-03
1 row selected

SQL> SELECT INTERVAL '300' MONTH,
  2         INTERVAL '54-2' YEAR TO MONTH,
  3         INTERVAL '11:12:10.1234567' hour TO SECOND
  4    FROM dual;
INTERVAL'300'MONTH   INTERVAL'54-2'YEARTOMONTH      INTERVAL'11:12:10.1234567'HOUR
-------------------- ------------------------------ ---------------------------------------
+25-00               +54-02                         +00 11:12:10.123457
1 row selected

Answer: A