Solution:Step 1: Combine values from both tables using UNIONUNION removes duplicates, so 'banana' appears only once.Step 2: Order the combined results alphabeticallyOrdering by value gives: 'apple', 'banana', 'cherry'.Final Answer:apple, banana, cherry -> Option DQuick Check:UNION removes duplicates

[Solved] Given two tables:Table A:id | value1 | 'apple'2 | 'banana'Table B:id | value2 | 'banana'3 | 'cherry'What is the result of this query?SELECT value FROM A UNION SELECT value FROM B ORDER BY value; | PostgreSQL

PostgreSQL - Set Operations and Advanced Queries

SELECT value FROM A UNION SELECT value FROM B ORDER BY value;

Aapple, banana, banana, cherry

Bapple, banana, cherry, banana

Cbanana, cherry

Dapple, banana, cherry

Step-by-Step Solution

Solution:

Step 1: Combine values from both tables using UNION
UNION removes duplicates, so 'banana' appears only once.
Step 2: Order the combined results alphabetically
Ordering by value gives: 'apple', 'banana', 'cherry'.
Final Answer:
apple, banana, cherry -> Option D
Quick Check:
UNION removes duplicates, so only one 'banana' [OK]

Quick Trick: UNION removes duplicates; check ordering carefully [OK]

Common Mistakes:

Including duplicate 'banana' with UNION
Ignoring ORDER BY effect
Confusing UNION with UNION ALL

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Given two tables:

Step 1: Combine values from both tables using UNION

Step 2: Order the combined results alphabetically

Final Answer:

Quick Check:

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