Welcome to ExamTopics
ExamTopics Logo
- Expert Verified, Online, Free.
Mail Us[email protected]
Menu
Databricks Discussions
exam questions

Exam Certified Data Analyst Associate All Questions

View all questions & answers for the Certified Data Analyst Associate exam
Go to Exam

Exam Certified Data Analyst Associate topic 1 question 29 discussion

Actual exam question from Databricks's Certified Data Analyst Associate
Question #: 29
Topic #: 1
[All Certified Data Analyst Associate Questions]

A data analyst has been asked to count the number of customers in each region and has written the following query:

If there is a mistake in the query, which of the following describes the mistake?

  • A. The query is using count(*), which will count all the customers in the customers table, no matter the region.
  • B. The query is missing a GROUP BY region clause.
  • C. The query is using ORDER BY, which is not allowed in an aggregation.
  • D. There are no mistakes in the query.
  • E. The query is selecting region, but region should only occur in the ORDER BY clause.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by MrWood47 at Jan. 27, 2024, 6:38 p.m.

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Submit Cancel
MrWood47
10 months ago
Selected Answer: B
The mistake in the query is that it is missing a GROUP BY clause. When using an aggregate function like COUNT(*) in conjunction with non-aggregated columns like region, you need to include a GROUP BY clause to specify how the data should be grouped for the aggregation.
upvoted 2 times
...

Get IT Certification

Unlock free, top-quality video courses on ExamTopics with a simple registration. Elevate your learning journey with our expertly curated content. Register now to access a diverse range of educational resources designed for your success. Start learning today with ExamTopics!

Start Learning for free
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel