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Snowflake Exam COF-C02 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).

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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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Keneth
1 months 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
8 days ago
It's always a relief when you can avoid those pesky NULL value issues, right?
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Jesusita
16 days ago
I know what you mean, a 'self-cleaning' data feature would be a game changer for sure.
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Destiny
1 months ago
I agree, D and E are definitely the best options to handle empty strings and NULL values.
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Vernice
2 months 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
2 months 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
2 months ago
I think the correct combination is D) EMPTY_FIELD_AS_NULL and E) SKIP_BLANK_LINES.
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Izetta
2 months 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
2 months 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
29 days ago
I would go with D and E as well, to handle empty strings and NULL values properly.
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Jesusita
1 months ago
I think it's important to use EMPTY_FIELD_AS_NULL and SKIP_BLANK_LINES.
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Jesusita
2 months ago
I agree, D and E are the correct options.
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