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Databricks Machine Learning Professional Exam - Topic 9 Question 49 Discussion

Actual exam question for Databricks's Databricks Machine Learning Professional exam
Question #: 49
Topic #: 9
[All Databricks Machine Learning Professional Questions]

A data scientist wants to remove the star_rating column from the Delta table at the location path. To do this, they need to load in data and drop the star_rating column.

Which option best code blocks accomplishes this task?

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Suggested Answer: D

by Flo at Jan 26, 2026, 04:01 PM

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Bettina
24 hours ago
Hmm, I'm torn between B and C. Decisions, decisions!
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Terrilyn
6 days ago
Option A is a bit too verbose, in my opinion.
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Annice
11 days ago
Option C seems the most concise and efficient.
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Lavonna
16 days ago
This looks straightforward. I'd go with option B.
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Anisha
22 days ago
I vaguely remember that we need to use the `spark.read` method to load the data, but I'm confused about how to specify the path correctly.
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Belen
27 days ago
I feel like the answer might involve reading the Delta table into a DataFrame and then chaining the drop method. I hope I remember the right order!
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Serina
2 months ago
I think we practiced a similar question where we had to manipulate a DataFrame. It involved using `withColumn` and `drop`, but I can't recall the exact syntax.
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Yong
2 months ago
I remember something about using the `drop` function in PySpark to remove a column, but I'm not entirely sure how to load the data first.
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Chaya
2 months ago
Easy peasy! I'll just read in the data, confirm the column names, and then use that drop() method to get rid of the star_rating column. Shouldn't take more than a few lines of code.
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Curt
2 months ago
Ugh, I'm a little unsure about the location path part. I'll need to double-check how to properly load the data from that specified location. But once I have the DataFrame, dropping the column should be easy.
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Susy
2 months ago
No problem, I've done something like this before. I'll load the data, check the column names, and then use DataFrame.drop() to remove the star_rating column.
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Lasandra
3 months ago
Okay, let's see. I'll need to figure out how to load the data from the specified location path first. Then I can drop the column using DataFrame.drop().
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Jani
3 months ago
Hmm, this seems pretty straightforward. I'd start by loading the data into a DataFrame, then use the drop() method to remove the star_rating column.
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