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Databricks Certified Data Analyst Associate Exam - Topic 5 Question 40 Discussion

A data analyst has created a user-defined function using the following line of code:CREATE FUNCTION price(spend DOUBLE, units DOUBLE)RETURNS DOUBLERETURN spend / units;Which of the following code blocks can be used to apply this function to the customer_spend and customer_units columns of the table customer_summary to create column customer_price?
E) SELECT price(customer_spend, customer_units) AS customer_price FROM customer_summary A user-defined function (UDF) is a function defined by a user, allowing custom logic to be reused in the user environment1.To apply a UDF to a table, the syntax isSELECT udf_name(column_name) AS alias FROM table_name2. Therefore, option E is the correct way to use the UDFpriceto create a new columncustomer_pricebased on the existing columnscustomer_spendandcustomer_unitsfrom the tablecustomer_summary.Reference: What are user-defined functions (UDFs)? User-defined scalar functions - SQL V
A) SELECT PRICE customer_spend, customer_units AS customer_price FROM customer_summary
B) SELECT price FROM customer_summary
C) SELECT function(price(customer_spend, customer_units)) AS customer_price FROM customer_summary
D) SELECT double(price(customer_spend, customer_units)) AS customer_price FROM customer_summary

Databricks Certified Data Analyst Associate Exam - Topic 5 Question 40 Discussion

Actual exam question for Databricks's Databricks Certified Data Analyst Associate exam
Question #: 40
Topic #: 5
[All Databricks Certified Data Analyst Associate Questions]

A data analyst has created a user-defined function using the following line of code:

CREATE FUNCTION price(spend DOUBLE, units DOUBLE)

RETURNS DOUBLE

RETURN spend / units;

Which of the following code blocks can be used to apply this function to the customer_spend and customer_units columns of the table customer_summary to create column customer_price?

Show Suggested Answer Hide Answer
Suggested Answer: E

by Xuan at Jul 11, 2025, 02:36 AM

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Corinne
7 months ago
Option A makes no sense, can't just call the function like that!
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Brandon
7 months ago
I think option D looks good too, but not quite right.
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Dottie
7 months ago
Option E is definitely the right choice!
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Alesia
7 months ago
Wait, is it really that simple? I thought UDFs were more complex!
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Enola
7 months ago
I agree, E is the way to go!
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Alica
8 months ago
I feel like options A and D are definitely wrong, but I’m not completely certain about B and C. I think they don't follow the correct function usage either.
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Virgina
8 months ago
I’m a bit confused about the syntax. I thought we needed to use "AS" for the alias, but I can't recall if it’s necessary for the function call itself.
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Marsha
8 months ago
I remember practicing similar questions, and I feel like the correct option should directly call the function with the columns. Option E seems to fit that.
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Emerson
8 months ago
I think the function needs to be called with the correct syntax, but I'm not sure if "SELECT price(customer_spend, customer_units)" is the right way to do it.
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Daniel
8 months ago
This is straightforward. The question gives us the UDF definition, so I just need to apply it to the customer_spend and customer_units columns to create the new customer_price column. Option E is the way to go.
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Rosamond
9 months ago
I'm not sure about the function syntax here. Do I need to use the DOUBLE data type in the function call, or will it automatically handle the column types?
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Malcolm
9 months ago
Okay, I think I've got it. I just need to select the price function with the two input columns and alias it as customer_price. Option E looks like the right answer.
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Laurel
9 months ago
Hmm, I'm a bit confused. Do I need to use the PRICE keyword or the actual function name 'price'? I want to make sure I get the syntax right.
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Lenna
9 months ago
This looks straightforward. I just need to apply the price function to the customer_spend and customer_units columns to get the customer_price.
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Glenn
11 months ago
Option E, without a doubt. It's like a surgeon's scalpel - precise and effective. Now, where's the coffee? This exam is thirsty work!
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Katy
10 months ago
Option E is the way to go. It's the most efficient choice.
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Lelia
10 months ago
I agree, option E is the correct way to apply the user-defined function to create the customer_price column.
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Rhea
12 months ago
I'm not sure, but I think option E makes sense because it follows the syntax for applying a UDF to a table.
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Fatima
12 months ago
I agree with you, Vi. Option E is the right way to apply the user-defined function.
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Jettie
12 months ago
Hmm, let's see... Ah, yes! Option E is the way to go. Elegant and efficient, just the way I like it.
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Aileen
12 months ago
Yep, E is the way to go. Can't beat that simple and straightforward syntax. This one's a piece of cake!
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Jacquelyne
11 months ago
User 2: User-defined functions definitely make things easier. This one's a piece of cake!
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Queen
11 months ago
User 1: Yep, E is the way to go. Can't beat that simple and straightforward syntax.
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Teri
12 months ago
Ah, the classic UDF question! Option E is clearly the winner here. Gotta love that direct function call, am I right?
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Eleni
11 months ago
Absolutely, using the UDF directly with SELECT is the best approach. Option E all the way!
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Thaddeus
11 months ago
Definitely! Option E is the way to go. Direct and simple.
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Vi
12 months ago
I think the correct option is E.
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