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CompTIA DY0-001 Exam - Topic 1 Question 12 Discussion

Actual exam question for CompTIA's DY0-001 exam
Question #: 12
Topic #: 1
[All DY0-001 Questions]

Which of the following JOINS would generate the largest amount of data?

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Suggested Answer: C

A CROSS JOIN produces the Cartesian product of the two tables (every row from the first paired with every row from the second), yielding far more rows than any of the other join types.


by Lashawn at Nov 22, 2025, 06:50 PM

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Mose
1 month ago
CROSS JOIN is definitely the answer. It’s all combinations!
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Alecia
2 months ago
RIGHT JOIN could be big, but still not as much as CROSS JOIN.
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Daniel
2 months ago
INNER JOIN is limited to matching rows, so less data.
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Ammie
2 months ago
LEFT JOIN might also be large, but not as much as CROSS JOIN.
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Hoa
2 months ago
Agreed! CROSS JOIN combines every row.
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Fatima
2 months ago
CROSS JOIN always surprised me with how much it returns!
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Nickolas
2 months ago
I thought LEFT JOIN could be bigger in some cases?
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Veronika
3 months ago
Wait, isn't INNER JOIN sometimes larger?
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Kati
3 months ago
Definitely agree, CROSS JOIN is no joke!
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Rory
3 months ago
C) CROSS JOIN? More like "cross-eyed" trying to figure this one out!
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Shenika
4 months ago
I always get my JOINs mixed up. This question is a real head-scratcher!
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Brianne
4 months ago
C) CROSS JOIN is the correct answer. It generates the largest amount of data by combining all rows from both tables.
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Stefan
4 months ago
CROSS JOIN sounds right, but I wonder if there are cases where LEFT or RIGHT JOIN could produce a lot of data too.
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Mickie
4 months ago
I practiced a question like this, and I believe INNER JOIN only returns matching records, so it shouldn't generate as much data.
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Christiane
4 months ago
I'm not entirely sure, but I remember something about LEFT and RIGHT JOINS returning all records from one table.
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Garry
4 months ago
I think the CROSS JOIN might generate the largest amount of data since it combines every row from both tables.
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Loreta
5 months ago
Alright, time to put my SQL knowledge to the test. I think I'll start by considering the cardinality of each JOIN type and go from there.
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Quentin
5 months ago
I've got a good feeling about this one. The CROSS JOIN is the way to go - it combines every row from both tables, so it's gotta be the largest output.
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James
5 months ago
I'm a bit confused on how the different JOINs work. I'll need to walk through some examples to understand which one would produce the most data.
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Noah
5 months ago
I'm pretty sure CROSS JOIN generates the most data.
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Aliza
5 months ago
I think CROSS JOIN would generate the largest amount of data.
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Lucy
6 months ago
D) INNER JOIN is the way to go. Who needs all that extra data anyway?
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Cherelle
6 months ago
Okay, let me think this through. I know that CROSS JOIN generates the largest result set, so I'm pretty sure that's the answer.
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Leanora
6 months ago
Hmm, this is a tricky one. I think I'll need to review my notes on the different types of JOINs to figure this out.
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Maryln
26 days ago
INNER JOIN is more selective, so less data.
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Claudia
1 month ago
Yeah, CROSS JOIN combines every row!
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Isabelle
1 month ago
CROSS JOIN usually creates the most data, right?
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Martha
5 months ago
I always get confused between LEFT and RIGHT JOIN.
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Jutta
6 months ago
I should definitely brush up on JOIN types too!
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