Job-Ready SQL in an Afternoon - Creating New Columns and Arithmetic

The video tutorial covers performing various operations on table columns using SQL. It starts with converting a bytes column to kilobytes by dividing by 1024. The tutorial then explores arithmetic operations like multiplication, subtraction, and addition on columns. It demonstrates using other columns for operations, such as calculating bytes per millisecond. The video also explains ordering results by calculated columns and using parentheses for complex operations to dictate the order of operations.

What operation is used to convert bytes to kilobytes in the tutorial?

• Multiplication by 1024

• Division by 1024

• Addition of 1024

• Subtraction of 1024

Which SQL clause is used to limit the number of rows returned in a query?

• ORDER BY

• GROUP BY

• WHERE

• LIMIT

In the tutorial, what is the effect of using an alias in SQL?

• It sorts the results in descending order

• It renames a column for better readability

• It changes the data type of a column

• It filters the rows based on a condition

Which arithmetic operation is NOT mentioned in the tutorial for modifying columns?

• Subtraction

• Multiplication

• Exponentiation

• Division

How is the 'bytes per millisecond' column calculated?

• By adding bytes to milliseconds

• By multiplying bytes by milliseconds

• By dividing bytes by milliseconds

• By subtracting milliseconds from bytes

What is the result of ordering by 'bytes per millisecond' in ascending order?

• Tracks are ordered by their length in milliseconds

• Tracks with the highest bytes per millisecond appear first

• Tracks with the lowest bytes per millisecond appear first

• Tracks are ordered alphabetically by name

What is the purpose of using parentheses in SQL operations as discussed in the tutorial?

• To filter rows based on a condition

• To dictate the order of operations

• To change the data type of a column

• To rename a column