Microsoft Exam DP-600 Topic 1 Question 9 Discussion

Actual exam question for Microsoft's DP-600 exam

Question #: 9
Topic #: 1

You have a Fabric tenant that contains a lakehouse. You plan to use a visual query to merge two tables.

You need to ensure that the query returns all the rows that are present in both tables. Which type of join should you use?

Aleft outer

Bright anti

Cfull outer

Dleft anti

Eright outer

Finner

Show Suggested Answer

Suggested Answer: C

When you need to return all rows that are present in both tables, you use a full outer join. This type of join combines the results of both left and right outer joins and returns all rows from both tables, with matching rows from both sides where available. If there is no match, the result is NULL on the side of the join where there is no match.

by Quentin at Apr 09, 2024, 12:46 PM

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Corinne

7 months ago

I think left outer join could also work if we want to keep all the rows from the table on the left side of the join.

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Mammie

8 months ago

That's true, but in this case, we want all rows from both tables, so a full outer join is more appropriate.

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Stanford

8 months ago

But what about using an inner join instead? It only returns rows that have matching values in both tables.

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Leonie

8 months ago

I agree with A full outer join will return all rows present in both tables.

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Mammie

8 months ago

I think we should use a full outer join.

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Julieta

8 months ago

A full outer join returns all rows from both tables, even if there is no match.

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Ollie

8 months ago

Why do you think that?

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Julieta

8 months ago

I disagree. I believe the answer is C) full outer.

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Ronny

9 months ago

Because an inner join returns rows when there is a match in both tables.

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Maile

9 months ago

Why do you think so?

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Ronny

9 months ago

I think the answer is F) inner.

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Truman

10 months ago

Hold on, what about a left outer join? That would also return all rows from the first table, plus any matching rows from the second table. Option A could work too, right?

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Dulce

10 months ago

Haha, you guys are really overthinking this. Why not just use an inner join? It will only return the rows that are present in both tables, which is what the question is asking for.

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Dudley

9 months ago

User 2

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Jamika

9 months ago

User 1

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Karima

10 months ago

You are right! Let's go with option F) inner.

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Emmett

10 months ago

F) inner

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Leota

10 months ago

E) right outer

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Sanda

10 months ago

D) left anti

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Serina

10 months ago

C) full outer

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Brice

10 months ago

B) right anti

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Kristofer

10 months ago

A) left outer

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Lynelle

10 months ago

Tell me about it! It's like they're trying to trick us or something. But hey, at least we've got each other to bounce ideas off of. That's better than staring at the screen alone, right?

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Brent

10 months ago

Absolutely! Teamwork makes the dreamwork, as they say. Although, I do have to admit, I'm a little nervous about the next question. Who knows what kind of curveball they'll throw at us next!

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Jaime

10 months ago

Hmm, I'm not sure I agree. If we want to return all the rows from both tables, shouldn't we use a right outer join instead? That way, we'll get all the rows from the right table and the matching rows from the left table.

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Felix

10 months ago

Good point, Clarinda. A left outer join will return all the rows from the left table and the matching rows from the right table. This could be useful if we want to prioritize one table over the other.

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Peggie

10 months ago

Hmm, this seems like a straightforward question about join types. I'm pretty confident I know the answer, but let's see what the others think.

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Clarinda

10 months ago

But wait, what if we want to include all the rows from one table and only the matching rows from the other table? In that case, a left outer join might be more appropriate.

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Derick

10 months ago

I agree with Adolph. The full outer join will return all the rows from both tables, regardless of whether there is a match or not. This ensures that we don't miss any data.

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Adolph

10 months ago

This is a tricky question. We need to make sure we understand the requirements properly. The question states that we need to return all the rows that are present in both tables, so a full outer join seems like the best option.

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