Suppose You Have a Table That Includes a Nested Column

question 235

Multiple Choice

Suppose you have a table that includes a nested column called "city" inside a column called "person", but when you try to submit the following query in BigQuery, it gives you an error. SELECT person FROM `project1.example.table1` WHERE city = "London" How would you correct the error?

• A) Add ", UNNEST(person)" before the WHERE clause.
• B) Change "person" to "person.city".
• C) Change "person" to "city.person".
• D) Add ", UNNEST(city)" before the WHERE clause.

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Definitions:

Perfectly Competitive Firm

A hypothetical business in a market where no single company can influence the market price or product quality, leading to an efficient allocation of resources.

Short Run

A period in economics during which at least one factor of production is fixed, limiting the ability to increase production in response to increased demand.

Profitable

A financial status where the income generated from business activities exceeds the expenses, taxes, and costs associated with maintaining the business.

Marginal Revenue

The additional revenue that a company earns from selling one more unit of a product or service.