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OCP 1Z0 051 QUESTION NO: 52

2014-06-04 11:52 351 查看
QUESTION NO: 52

View the Exhibit and evaluate structures of the SALES, PRODUCTS, and COSTS tables.

Evaluate the following SQL statements:



Which statement is true regarding the above compound query?

SQL>SELECT prod_id FROM products

INTERSECT

SELECT prod_id FROM sales

MINUS

SELECT prod_id FROM costs;

A. It shows products that have a cost recorded irrespective of sales

B. It shows products that were sold and have a cost recorded

C. It shows products that were sold but have no cost recorded

D. It reduces an error

Answer: C

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