Job-Ready SQL in an Afternoon - Filtering Null Values

Job-Ready SQL in an Afternoon - Filtering Null Values

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

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The video tutorial explains how to handle null values in a SQL database, specifically focusing on the composer table. It covers selecting records with null values using the IS NULL statement and emphasizes the importance of using the correct syntax. Additionally, it demonstrates how to negate null values with the IS NOT NULL statement, ensuring a comprehensive understanding of handling null values in SQL queries.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain the importance of using 'is null' instead of '=' when checking for null values.

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the correct SQL statement to check for null values in the composer column?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How can you find all cases where the composer is not null?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What special case must be considered when dealing with null values in SQL?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe how the 'where' statement applies to cases with null values.

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