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What will be the result of querying a date field with format epoch_millis when the input is 1689456000000?

medium📝 Predict Output Q5 of 15
Elasticsearch - Mappings and Data Types
What will be the result of querying a date field with format epoch_millis when the input is 1689456000000?
AAn error because input is not a string
BDate stored as literal number 1689456000000
CDate corresponding to 1970-01-01T00:00:00.000Z
DDate corresponding to 2023-07-15T00:00:00.000Z
Step-by-Step Solution
Solution:

  1. Step 1: Understand epoch_millis format

    Epoch milliseconds represent milliseconds since 1970-01-01T00:00:00Z.

  2. Step 2: Convert 1689456000000 to date

    This value corresponds to 2023-07-15T00:00:00.000Z.

  3. Final Answer:

    Date corresponding to 2023-07-15T00:00:00.000Z -> Option D

  4. Quick Check:

    Epoch millis input converts to correct date [OK]
Quick Trick: Epoch millis is milliseconds since 1970-01-01 UTC [OK]
Common Mistakes:
MISTAKES
  • Assuming input must be string
  • Confusing epoch millis with seconds
  • Expecting error on numeric input

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