Discuss Qlik QSDA2024 Exam Topic 2 Question 15

Exhibit.

One of the data sources a data architect must add for a newly developed app is an Excel spreadsheet. The Region field only has values for the first record for the region. The data architect must perform a transformation so that each row contains the correct Region.

Which function should the data architect implement to resolve this issue?

APrevious

BCrossTable

CAbove

DIntervalMatch

Suggested Answer: A

The given Excel spreadsheet has a Region field where the region value is only specified for the first record within each region. The data architect needs to fill in the missing region values for subsequent rows.

Previous() Function: The Previous() function in Qlik Sense returns the value of the expression from the previous row. In this case, it can be used to fill down the Region values so that each row contains the correct region information.

Implementation: The script can be designed to check if the current row's Region value is missing (null). If it is missing, the script can assign the value from the previous row using the Previous() function.

LOAD

If(IsNull(Region), Previous(Region), Region) AS Region,

...

This logic fills in the missing Region values with the value from the preceding row, which effectively resolves the issue shown in the spreadsheet.

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40 comments · newest first

Stephane 11 months ago

Not so sure about that, what if the data structure changes?

Helaine 11 months ago

Surprised this is even a question, Above is the clear choice!

Erick 11 months ago

Definitely not IntervalMatch, that’s for different scenarios.

Ling 11 months ago

I think CrossTable might be more appropriate here.

Linn 11 months ago

The Above function is usually the go-to for filling down values.

Sarah 12 months ago

I feel like I've seen the Above function used for this kind of problem before, but I'm not completely confident.

Donette 12 months ago

I practiced a similar question where we had to fill in missing data, but I can't recall if CrossTable or IntervalMatch was involved.

Jaime 12 months ago

I think the Above function might be the right choice since it can reference the previous row's value.

Monroe 1 year ago

I remember something about filling down values in Excel, but I'm not sure which function does that in this context.

Bette 1 year ago

I've seen this type of problem before. The IntervalMatch function should be able to propagate the Region values down the rows. I'm pretty confident that's the right solution here.

Bernardine 1 year ago

Okay, let me take a closer look at the options. Previous and CrossTable don't seem quite right for this scenario. I'm leaning towards IntervalMatch, but I'll double-check the details.

Louis 1 year ago

Hmm, the Region field only having values for the first record is a common issue with Excel data. I think the IntervalMatch function might be the way to go here.

Mindy 1 year ago

This looks like a tricky one. I'll need to think through the data transformation carefully to figure out the right function to use.

Galen 2 years ago

Wait, is this a trick question? If the region values are only in the first row, then Previous is the only logical choice. Unless the data architect is a quantum physicist, that is.

James 2 years ago

↳ replying to Galen

IntervalMatch doesn't seem like the right function to use in this case.

Louann 2 years ago

↳ replying to Galen

D) IntervalMatch

Linwood 2 years ago

↳ replying to Galen

Definitely not Above, that wouldn't help with this issue.

Jannette 2 years ago

↳ replying to Galen

C) Above

Cristen 2 years ago

↳ replying to Galen

No, I don't think Crosstable would work in this scenario. It's definitely Previous.

Fallon 2 years ago

↳ replying to Galen

B) CrossTable

Haydee 2 years ago

↳ replying to Galen

I think you're right, Previous seems like the most logical choice here.

Brock 2 years ago

↳ replying to Galen

A) Previous

Geoffrey 2 years ago

Above? Really? That's like trying to solve a flat-earth problem with a hot air balloon. Previous is the clear winner here.

Meaghan 2 years ago

↳ replying to Geoffrey

Yeah, using Above would just complicate things unnecessarily. Previous is the most logical choice.

Carry 2 years ago

↳ replying to Geoffrey

I agree, Previous is definitely the way to go in this situation.

Merrilee 2 years ago

I believe the data architect should consider using the IntervalMatch function instead. It might provide a better solution.

Dottie 2 years ago

I agree with Vincenza. CrossTable function seems like the most appropriate choice for this scenario.

Vincenza 2 years ago

I think the data architect should implement the CrossTable function to resolve this issue.

Brynn 2 years ago

IntervalMatch? What is this, a logic puzzle? Previous is the answer, hands down.

Louvenia 2 years ago

↳ replying to Brynn

I agree, Previous function is the best choice here.

Shenika 2 years ago

↳ replying to Brynn

I think Previous is the way to go.

Glory 2 years ago

I was thinking CrossTable, but that's probably overkill for this simple task. Previous is the way to go.

Emile 2 years ago

↳ replying to Glory

Yes, Previous function is the most suitable choice in this scenario.

Nieves 2 years ago

↳ replying to Glory

I think CrossTable might be too complex for this specific issue.

Marg 2 years ago

↳ replying to Glory

I agree, Previous function should work just fine for this task.

Vinnie 2 years ago

The Previous function seems like the obvious choice here. It will fill in the missing region values for each row based on the previous record.

Kandis 2 years ago

↳ replying to Vinnie

Yeah, Previous function will definitely resolve the issue with the Region field.

Pansy 2 years ago

↳ replying to Vinnie

CrossTable might work too, but I think Previous is more suitable.

Walker 2 years ago

↳ replying to Vinnie

I agree, it will help fill in the missing region values.

Alisha 2 years ago

↳ replying to Vinnie

I think the Previous function is the way to go.

Qlik QSDA2024 Exam - Topic 2 Question 15 Discussion