Master SQL for Data Analysis - Query Data (SELECT)
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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4 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the significance of using a wildcard (*) in a SELECT statement?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain the concept of virtual tables in SQL.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
How do you limit the number of records returned by a SQL query?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
What are comments in SQL and why are they useful?
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