Tables A and B have no columns with the same name. What does this query return?

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SQL - Advanced Joins

Tables A and B have no columns with the same name. What does this query return?
SELECT * FROM A NATURAL JOIN B;

ANATURAL JOIN performs a CROSS JOIN if no common columns

BSyntax error because NATURAL JOIN needs ON clause

CNATURAL JOIN requires at least one common column to join on

DTables must have same number of columns for NATURAL JOIN

Step-by-Step Solution

Solution:

Step 1: Recall NATURAL JOIN requirements
NATURAL JOIN joins on all columns with the same name. If no common columns, no join conditions apply.
Step 2: Understand result with no common columns
It performs a CROSS JOIN, returning the cartesian product of rows from both tables.
Final Answer:
NATURAL JOIN performs a CROSS JOIN if no common columns -> Option A
Quick Check:
NATURAL JOIN no common columns = CROSS JOIN [OK]

Quick Trick: NATURAL JOIN with no common columns = CROSS JOIN [OK]

Common Mistakes:

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