Which eval operator concatenates a string and a number in Splunk?

When using the eval command, which of these characters can be used to concatenate a string and a number into a single value?

  1. ~ (tilde)
  2. & (ampersand)
  3. + (plus)
  4. . (period) Source Reference Answer

Community Votes

D
60%
C
40%

60% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.

Community Insight

The exam tests the specific eval operator behavior: the period (.) concatenates strings and numbers, while the plus (+) cannot mix types for concatenation.

In Splunk's eval command, the period (.) operator concatenates a string and a number into a single value. Community votes favor D, but some misidentify the plus (+) operator, which actually only concatenates two strings or adds two numbers.

Choosing C. Plus (+) is a common mistake because many programming languages use + for concatenation, but Splunk's eval plus only concatenates two strings or adds two numbers; it does not accept a string and number mix.

Community Discussion (6 comments)

jbr21 👍 1 Selected: D
Answer is D for number and string
alexoancea08 👍 1 Selected: C
A. ~ (tilde) → Not used for concatenation in Splunk. B. & (ampersand) → Not a valid operator for concatenation. D. . (period) → Not used for string concatenation in Splunk (unlike some other languages like PHP). so C is the ans
tonydbass 👍 2 Selected: D
https://docs.splunk.com/Documentation/Splunk/9.4.0/SearchReference/Eval#:~:text=of%20functions.-,Operators,-The%20following%20table
FrozenYeti 👍 1 Selected: C
Answer is C The concatenation operator accepts both strings and numbers. Numbers are concatenated as strings and produces a string.
NastyNutsu 👍 4
D - (.) concatenated both strings and numbers. where (plus) concatenate the string with string or number with number.
8b5c1e8 👍 3
D - Operators that produce numbers The plus ( + ) operator accepts two numbers for addition, or two strings for concatenation. The subtraction ( - ), multiplication ( * ), division ( / ), and modulus ( % ) operators accept two numbers. Operators that produce strings The period ( . ) operator concatenates both strings and number. Numbers are concatenated in their string represented form.

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Expert Analysis

Why the Answer Is Correct

The correct answer is D. Splunk's eval command uses the period (.) operator specifically for concatenating a string and a number. This is documented in the official eval operators table. As one commenter notes, "The period ( . ) operator concatenates both strings and numbers. Numbers are concatenated in their string represented form." This means the result is always a string.

Why the Other Options Are Wrong

A (~) is not a valid eval operator for concatenation. B (&) is also not used for concatenation in Splunk. C (+) is a common trap: it concatenates two strings or adds two numbers, but it cannot mix a string and a number. One commenter incorrectly claimed C is correct, but they overlooked the distinction between string-string concatenation and string-number concatenation.

Community Comment Notes

Several commenters correctly identified D with supporting explanations. Comment 1 states that the period concatenates both strings and numbers, while the plus concatenates string with string or number with number. Comment 3 provides a direct link to the official Splunk documentation. Comment 5, which argues for C, is misleading and reflects a misunderstanding of eval operator rules in Splunk.

Official Reference

Exam Strategy

Memorize Splunk's eval operator table: '+' is for addition or string-string concatenation, while '.' is for string-number concatenation. On the exam, read the prompt carefully to see whether they ask for 'string and number' (use '.') or 'string and string' (use '+').

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