SQL - LEFT and RIGHT JOIN
If you perform a
RIGHT JOIN between tables A and B, which table's rows will always appear in the result?If you perform a RIGHT JOIN between tables A and B, which table's rows will always appear in the result?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall RIGHT JOIN definition
RIGHT JOIN returns all rows from the right table regardless of matches.Step 2: Identify which table is right
Table B is the right table in the join between A and B.Final Answer:
Only rows from table B always appear in the result. -> Option BQuick Check:
RIGHT JOIN includes all right table rows = Only rows from table B [OK]
Quick Trick: RIGHT JOIN always keeps all rows from the right table [OK]
Common Mistakes:
MISTAKES- Assuming rows from left table always appear
- Thinking only matching rows appear
- Confusing right and left tables
Master "LEFT and RIGHT JOIN" in SQL
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