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Data Concepts and EnvironmentshardMultiple ChoiceObjective-mapped

DA0-002 Data Concepts and Environments Practice Question

Network Topology
+| cust_id | orders || 101 | 7 || 203 | 9 |

Refer to the exhibit. A data analyst runs this query to identify high-value customers. However, the result does not include customers with exactly 5 orders. Which data concept does the HAVING clause illustrate?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Data aggregation with filtering on aggregated values

HAVING filters groups after aggregation, unlike WHERE which filters rows before aggregation. This demonstrates data aggregation with filtering on aggregated values.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Data sorting with ORDER BY

    Why it's wrong here

    ORDER BY sorts results; HAVING filters, not sorts.

  • Data joining with INNER JOIN

    Why it's wrong here

    Joining combines tables; HAVING filters aggregated data.

  • Data aggregation with filtering on aggregated values

    Why this is correct

    HAVING filters after GROUP BY, operating on aggregated results.

  • Data filtering on row-level conditions

    Why it's wrong here

    Row-level filtering is done with WHERE, not HAVING.

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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