Examine the structure of the ORDERS table:
Name Null Type
ORDER_ID NOT NULL NUMBER(12)
ORDER_DATE NOT NULL TIMESTAMP(6)
CUSTOMER_ID NOT NULL NUMBER(6)
ORDER_STATUS NUMBER(2)
ORDER_TOTAL NUMBER(8,2)
You want to find the total value of all the orders for each year and issue the following command:
SQL>SELECT TO_CHAR(order_date,’rr’), SUM(order_total)
FROM orders
GROUP BY TO_CHAR(order_date,’yyyy’);
Which statement is true regarding the outcome?
A.
It executes successfully and gives the correct output.
B.
It gives an error because the TO_CHAR function is not valid.
C.
It executes successfully but does not give the correct output.
D.
It gives an error because the data type conversion in the SELECT list does not match the data type conversion in the GROUP BY clause.
The following code works:
SELECT TO_CHAR(order_date,’rr’), SUM(order_total)
FROM orders
GROUP BY TO_CHAR(order_date,’rr’);