You have been asked to construct a query in the company's RDBMS. You have deployed a Right Outer Join operation. Referring to the scenario above, what will happen to the final results when there is NO match between the tables?

technology databases

  1. The right table will return ALL rows.

  2. The right table will return NULL.

  3. Both tables will return NULL.

  4. The left table will return ALL rows.

  5. The left table will return NULL.

Show answer
Correct Option: D

AI Explanation

To answer this question, we need to understand the behavior of a Right Outer Join operation when there is no match between the tables.

In a Right Outer Join, all the rows from the right table are returned, regardless of whether there is a match or not. If there is no match between the tables, the columns from the left table will have NULL values in the result set.

Therefore, the correct answer is:

D. The left table will return ALL rows.

This option is correct because in a Right Outer Join, when there is no match, the left table will still return all of its rows, but with NULL values in the columns that correspond to the right table.

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