Discuss Microsoft DP-600 Exam Topic 4 Question 21

You have a Fabric tenant tha1 contains a takehouse named Lakehouse1. Lakehouse1 contains a Delta table named Customer.

When you query Customer, you discover that the query is slow to execute. You suspect that maintenance was NOT performed on the table.

You need to identify whether maintenance tasks were performed on Customer.

Solution: You run the following Spark SQL statement:

EXPLAIN TABLE customer

Does this meet the goal?

AYes

BNo

Suggested Answer: B

The Table.Profile function in Power Query is used to generate column statistics such as count, average, null count, distinct count, and standard deviation. You can use this function as follows:

Invoke the Power Query Editor.

Apply the Table.Profile function to your table.

The result will be a table where each row represents a column from the original table, and each column in the result represents a different statistic such as those listed in the requirement.

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30 comments · newest first

Melodie 11 months ago

It's a good start, but not the whole solution.

Miriam 11 months ago

Really? I thought you needed more than just EXPLAIN.

Timothy 11 months ago

Definitely meets the goal!

Lillian 12 months ago

I think it won't give you the full picture.

Lynette 12 months ago

Yes, EXPLAIN TABLE shows maintenance info.

Bette 1 year ago

I believe the answer is B. EXPLAIN TABLE doesn't directly tell us about maintenance; we might need to look at other commands for that.

Sunshine 1 year ago

I feel like this question is tricky. EXPLAIN TABLE could help with understanding performance issues, but does it really confirm maintenance tasks?

Lorriane 1 year ago

I remember a practice question where we had to check table statistics. EXPLAIN TABLE might not cover that aspect.

Honey 1 year ago

I think running EXPLAIN TABLE might give us some insights into the table's structure, but I'm not sure if it shows maintenance history.

Lynelle 1 year ago

I'm a bit unsure about this one. The EXPLAIN TABLE statement might give me some insights, but I'm not confident it will directly answer whether maintenance tasks were performed. I think I'll need to dig a bit deeper to find the right approach.

Lavonne 1 year ago

The EXPLAIN TABLE statement sounds like a good starting point to me. It should provide details on the table structure, partitioning, and any optimization that has been applied. If the output shows the table is not optimized, that could indicate maintenance hasn't been performed.

Ronna 1 year ago

Hmm, I'm not sure if the EXPLAIN TABLE statement is the right approach here. Wouldn't I need to look at some table metadata or statistics to see if maintenance has been done? I'm a bit confused on the best way to approach this.

Annelle 1 year ago

I think the EXPLAIN TABLE statement should give me some information about the table structure and optimization, which could help identify if maintenance tasks were performed. I'll give it a try.

Candra 2 years ago

The EXPLAIN TABLE statement is a good start, but it's not going to directly answer the question of whether maintenance tasks were performed. It's like trying to solve a mystery by reading the table of contents - you need to dig a little deeper to find the real clues.

Walton 1 year ago

↳ replying to Candra

User4: Agreed, we might need to dig deeper to find the real clues.

Shawnee 1 year ago

↳ replying to Candra

User3: Maybe we should try a different approach to check for maintenance tasks.

Angelyn 1 year ago

↳ replying to Candra

User2: Yes, that's a good start, but it may not directly tell us if maintenance tasks were performed.

Yuonne 1 year ago

↳ replying to Candra

User1: I think we should run the EXPLAIN TABLE statement on Customer.

Suzi 2 years ago

But what if the query is slow because of something else? Maybe we should consider other options too.

Marjory 2 years ago

I agree with Dudley, that should help identify if maintenance tasks were performed on Customer.

Truman 2 years ago

Hmm, I don't think the EXPLAIN TABLE statement is the right solution here. It's like trying to figure out if your car needs an oil change by looking at the engine blueprint - it's just not the right tool for the job.

Garry 1 year ago

↳ replying to Truman

User2: We need a different approach to check if maintenance was done on the table.

Rickie 1 year ago

↳ replying to Truman

User1: I agree, EXPLAIN TABLE won't tell us if maintenance tasks were performed on Customer.

Francisca 2 years ago

While the EXPLAIN TABLE statement can give you insights into the table's structure and performance, it won't tell you whether maintenance tasks have been performed. You'll need to look at other metadata or logs to determine that.

Jose 2 years ago

The EXPLAIN TABLE statement doesn't directly identify whether maintenance tasks were performed on the Customer table. It provides information about the table's structure and execution plan, but doesn't indicate if any maintenance activities have been carried out.

Arminda 1 year ago

↳ replying to Jose

User1: Maybe we should look for other ways to verify if maintenance was done on the table.

Vanda 1 year ago

↳ replying to Jose

User3: So, should we try a different approach to check for maintenance tasks?

Shanice 1 year ago

↳ replying to Jose

User2: Yes, you're right. It only gives us the table's structure and execution plan.

Kallie 1 year ago

↳ replying to Jose

User1: I think the EXPLAIN TABLE statement won't tell us if maintenance tasks were performed on Customer.

Dudley 2 years ago

I think the solution is to run EXPLAIN TABLE customer.

Microsoft DP-600 Exam - Topic 4 Question 21 Discussion