You Are Using Google BigQuery as Your Data Warehouse

question 239

Multiple Choice

You are using Google BigQuery as your data warehouse. Your users report that the following simple query is running very slowly, no matter when they run the query: SELECT country, state, city FROM [myproject:mydataset.mytable] GROUP BY country You check the query plan for the query and see the following output in the Read section of Stage:1: What is the most likely cause of the delay for this query?

• A) Users are running too many concurrent queries in the system
• B) The [myproject:mydataset.mytable] table has too many partitions The [myproject:mydataset.mytable] table has too many partitions
• C) Either the state or the city columns in the [myproject:mydataset.mytable] table have too many NULL values Either the state or the city columns in the [myproject:mydataset.mytable] table have too many NULL values
• D) Most rows in the [myproject:mydataset.mytable] table have the same value in the country column, causing data skew Most rows in the table have the same value in the country column, causing data skew

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Definitions:

Organizational Politics

Refers to the activities carried out within organizations to acquire, develop, and use power and other resources to obtain one's preferred outcomes in a situation where there is uncertainty or disagreement.

Political Skill

An interpersonal style that manifests itself in being socially astute and engaging in behaviors that lead to feelings of confidence, trust, and sincerity.

Social Awareness

The ability to understand and respond to the feelings, needs, and concerns of others, including recognizing social cues and appropriately adapting behavior.

Empowerment

The process of giving individuals or groups more control, authority, and responsibility regarding their own lives or work.