（162）View the Exhibit and examine the structure of the PRODUCTS, SALES, and SALE_SUMMARY tables. SALE_VW is a view created using the following command :

CREATE VIEW sale_vw AS SELECT prod_id, SUM(quantity_sold) QTY_SOLD FROM sales GROUP BY prod_id;

You issue the following command to add a row to the SALE_SUMMARY table :

INSERT INTO sale_summary SELECT prod_id, prod_name, qty_sold FROM sale_vw JOIN products USING (prod_id) WHERE prod_id = 16;

What is the outcome?

A. It executes successfully.

B. It gives an error because a complex view cannot be used to add data into the SALE_SUMMARY table.

C. It gives an error because the column names in the subquery and the SALE_SUMMARY table do not match.

D. It gives an error because the number of columns to be inserted does not match with the number of columns in the SALE_SUMMARY table.

答案：（D）

ITPub博客

OCP 1Z0-051 162

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