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Databricks Exam Databricks-Certified-Data-Analyst-Associate Topic 1 Question 8 Discussion

Actual exam question for Databricks's Databricks-Certified-Data-Analyst-Associate exam
Question #: 8
Topic #: 1
[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

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


by Allene at Mar 09, 2024, 01:39 PM

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Casie
5 months ago
I think E is the best choice because it directly applies the price function to the columns.
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Jamie
5 months ago
I think option C is incorrect because it uses function() unnecessarily.
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Juan
5 months ago
I'm not sure, but I think option C might also work.
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Florinda
5 months ago
I agree with Jamie, option E seems to be the right choice.
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Jamie
5 months ago
I think the correct answer is E.
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Audra
6 months ago
I would go with option E as well, it looks the most straightforward and logical to me.
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Santos
6 months ago
I'm not sure about option C, it seems to be using the function keyword incorrectly.
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Johnetta
6 months ago
I agree, option E seems to be the right choice because it directly applies the function to the columns.
upvoted 0 times
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Gail
6 months ago
I think the correct answer is E.
upvoted 0 times
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