View the Exhibits and examine PRODUCTS and SALES tables.
You issue the following query to display product name and the number of times the product has
been sold:
SQL>SELECT p.prod_name, i.item_cnt
FROM (SELECT prod_id, COUNT(*) item_cnt
FROM sales
GROUP BY prod_id) i RIGHT OUTER JOIN products p
ON i.prod_id = p.prod_id;
What happens when the above statement is executed?
A.
The statement executes successfully and produces the required output.
B.
The statement produces an error because ITEM_CNT cannot be displayed in the outer query.
C.
The statement produces an error because a subquery in the FROM clause and outer-joins cannot be
used together.
D.
The statement produces an error because the GROUP BY clause cannot be used in a subquery in the
FROM clause.