DA0-002: CompTIA Data+ V2

By CompTIA · Question Mode

QuestionQ24

Data analysis

A report that had been working previously now returns the following error:

> The column FullName is invalid or does not exist.

Which action should a data analyst take to investigate this issue?

Explanation

A missing or invalid column reference is investigated by checking the current table schema for its valid column names. Querying table metadata provides the authoritative column list and identifies whether FullName was renamed, removed, or referenced incorrectly.

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