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Exam SPLK-1004 topic 1 question 33 discussion

Actual exam question from Splunk's SPLK-1004
Question #: 33
Topic #: 1
[All SPLK-1004 Questions]

Which statement about the coalesce function is accurate?

  • A. It can take only a single argument.
  • B. It can take a maximum of two arguments.
  • C. It can be used to create a new field in the results set.
  • D. It can return null or non-null values.
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Suggested Answer: D 🗳️

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emlch
1 month, 2 weeks ago
Selected Answer: C
This kind of question is not nice. But let's see the options A. No, coalesce can take one or more values B. No, one or more values C. Yes, it creates a field with the first non-null value of any argument passed D. I'm not sure about this, because if any argument isn't contained in that event, the field my guess is that the field wouldn't be created in that event. But anyway, it isn't as accurate as C. So C is my final answer. https://docs.splunk.com/Documentation/SCS/current/SearchReference/ConditionalFunctions#coalesce.28.26lt.3Bvalues.26gt.3B.29
upvoted 1 times
emlch
1 month, 2 weeks ago
Ah, just adding that C is valid due to the nature of the eval command, that can create new fields
upvoted 2 times
emlch
1 month, 2 weeks ago
Test it, C is the correct answer. | makeresults | eval ip_field = coalesce(clientip, s_ip) | table ip_field, clientip, s_ip -------> No results find (i.e. coalesce doesnt return non-null values). | makeresults | eval s_ip="10.0.0.1" | eval ip_field = coalesce(clientip, s_ip) | table ip_field, clientip, s_ip --------> Result-> ipfield = s_ip (the first non-null value)
upvoted 3 times
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Derag
2 months, 1 week ago
No, it is D. Option C is not correct because the coalesce function can indeed be used to create a new field in the results set. The coalesce function returns the first non-null value from a list of arguments, and it can be used with the eval command to create a new field in the results set.
upvoted 2 times
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Eddie_exam
2 months, 1 week ago
Selected Answer: C
Correct answer is C. When used in combination with eval command to create a new field. This function takes one or more values and returns the first value that is not NULL. See https://docs.splunk.com/Documentation/SCS/current/SearchReference/ConditionalFunctions
upvoted 1 times
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