SQL - LEFT and RIGHT JOIN
What is the main difference between a
RIGHT JOIN and a LEFT JOIN in SQL?What is the main difference between a RIGHT JOIN and a LEFT JOIN in SQL?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand LEFT JOIN behavior
LEFT JOIN returns all rows from the left table and matching rows from the right table.Step 2: Compare with RIGHT JOIN
RIGHT JOIN is the opposite; it returns all rows from the right table and matching rows from the left table.Final Answer:
RIGHT JOIN returns all rows from the right table and matching rows from the left table. -> Option AQuick Check:
RIGHT JOIN behavior = RIGHT JOIN returns all rows from the right table and matching rows from the left table. [OK]
Quick Trick: RIGHT JOIN keeps all right table rows, matching left rows or NULL [OK]
Common Mistakes:
MISTAKES- Confusing RIGHT JOIN with LEFT JOIN
- Thinking RIGHT JOIN returns only matching rows
- Assuming RIGHT JOIN returns all rows from both tables
Master "LEFT and RIGHT JOIN" in SQL
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