Database Management
primer-original-v2mediumSQLJOINLEFT JOININNER JOINprimer-original-v2

What rows does a LEFT JOIN return that an INNER JOIN does not?

Answer options

A
Rows from the right table with no match in the left table
B
Rows from the left table with no match in the right table
C
Duplicate rows from both tables
D
Rows where both tables have NULL values

Correct answer: Rows from the left table with no match in the right table

Detailed Solution & Conceptual Analysis

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Key Engineering Takeaway

In Database Management, understanding the underlying mechanics of SQL is critical for writing performant, bug-free production code and passing rigorous technical architecture reviews.

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