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Snowflake COF-C02 Exam - Topic 6 Question 56 Discussion

Actual exam question for Snowflake's COF-C02 exam

Question #: 56
Topic #: 6

[All COF-C02 Questions]

When unloading data, which combination of parameters should be used to differentiate between empty strings and NULL values? (Select TWO).

AESCAPE_UNENCLOSED_FIELD

BREPLACE_INVALID_CHARACTERS

CFIELD_OPTIONALLY_ENCLOSED_BY

DEMPTY_FIELD_AS_NULL

ESKIP_BLANK_LINES

Show Suggested Answer

Suggested Answer: C, D

When unloading data in Snowflake, it is essential to differentiate between empty strings and NULL values to preserve data integrity. The parameters FIELD_OPTIONALLY_ENCLOSED_BY and EMPTY_FIELD_AS_NULL are used together to address this:

FIELD_OPTIONALLY_ENCLOSED_BY: This parameter specifies the character used to enclose fields, which can differentiate between empty strings (as enclosed fields) and NULLs.

EMPTY_FIELD_AS_NULL: By setting this parameter, Snowflake interprets empty fields as NULL values when unloading data, ensuring accurate representation of NULLs versus empty strings.

These parameters are crucial when exporting data for systems that need explicit differentiation between NULL and empty string values.

by Filiberto at Jun 11, 2025, 12:08 PM

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Lawrence

8 months ago

Surprised that people mix up NULL and empty strings!

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Sang

8 months ago

I thought EMPTY_FIELD_AS_NULL was a given.

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Margarett

9 months ago

I think D and C are the right choices.

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Annice

9 months ago

Totally agree, D is essential for NULLs!

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Alverta

9 months ago

Wait, isn't C just for formatting?

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Marva

9 months ago

I think "EMPTY_FIELD_AS_NULL" and "SKIP_BLANK_LINES" could be the right combo, but I’m not completely confident. I remember discussing this in our last study group.

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Dell

9 months ago

I feel like "ESCAPE_UNENCLOSED_FIELD" might not be the right choice for this question. It seems more related to handling special characters than distinguishing between NULL and empty.

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Evette

10 months ago

I'm a bit unsure about the second option. I remember practicing with similar questions, but I can't recall if "FIELD_OPTIONALLY_ENCLOSED_BY" is relevant here.

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Tamera

10 months ago

I think "EMPTY_FIELD_AS_NULL" is definitely one of the options we should choose. It seems to fit the question about differentiating NULLs from empty strings.

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Cassie

10 months ago

I've seen questions like this before, so I think I know the right approach. I'll make sure to select the two most relevant parameters to solve this.

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Lasandra

10 months ago

The key here is to differentiate between empty strings and NULL values. I'm pretty sure the right combination of parameters will do that, but I'll need to review them carefully.

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Murray

10 months ago

I'm a bit confused by the wording of this question. I'll need to re-read it a few times to make sure I understand what they're asking.

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Dalene

11 months ago

Okay, I think I know the answer to this one. Let me double-check the options and make sure I'm on the right track.

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Kerrie

11 months ago

Hmm, this looks like a tricky one. I'll need to think carefully about the different parameters and how they might handle empty strings versus NULL values.

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Keneth

1 year ago

Aha, I got this! D and E are the way to go. Anything to avoid those pesky NULL value issues. Though, I have to say, sometimes I wish data came with a 'self-cleaning' feature. Would make my life a lot easier.

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Rana

1 year ago

It's always a relief when you can avoid those pesky NULL value issues, right?

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Jesusita

1 year ago

I know what you mean, a 'self-cleaning' data feature would be a game changer for sure.

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Destiny

1 year ago

I agree, D and E are definitely the best options to handle empty strings and NULL values.

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Vernice

1 year ago

I'm not sure about that. I think it might also be helpful to use C) FIELD_OPTIONALLY_ENCLOSED_BY to handle any optional enclosing characters.

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Eric

1 year ago

I agree with Ulysses. Using EMPTY_FIELD_AS_NULL will differentiate between empty strings and NULL values, and SKIP_BLANK_LINES will help skip blank lines.

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Ulysses

1 year ago

I think the correct combination is D) EMPTY_FIELD_AS_NULL and E) SKIP_BLANK_LINES.

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Izetta

1 year ago

Hmm, I'm not sure. I was thinking B and C might work, but I guess D and E make more sense. Gotta love these tricky data unloading questions, am I right?

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Gwen

1 year ago

I think the correct answer is D and E. Differentiating between empty strings and NULL values is crucial, and those two options seem to address that directly.

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Jesusita

1 year ago

I would go with D and E as well, to handle empty strings and NULL values properly.

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Jesusita

1 year ago

I think it's important to use EMPTY_FIELD_AS_NULL and SKIP_BLANK_LINES.

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Jesusita

1 year ago

I agree, D and E are the correct options.

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