Quiz on Pivoting in SQL

What is pivoting in data analysis?

• Summarizing data without transformation

• Filtering data based on conditions

• Transforming rows into columns

• Transforming columns into rows

Which SQL database has a built-in PIVOT function?

• MySQL

• SQLite

• PostgreSQL

• SQL Server

What can be used in MySQL to achieve a pivot-like result?

• UNION operations

• JOIN statements

• CASE statements and aggregate functions

• Subqueries

What is the primary purpose of pivoting data?

• To create new tables

• To better analyze or summarize data

• To delete unnecessary data

• To increase data redundancy

Which of the following is NOT a characteristic of pivoting?

• It requires a built-in function in MySQL

• It can summarize data

• It transforms rows into columns

• It helps in data analysis

What is a common SQL function used alongside CASE statements for pivoting?

• DELETE

• UPDATE

• COUNT

• INSERT

In which scenario would you use pivoting?

• When you want to delete rows

• When you want to analyze data trends

• When you want to create indexes

• When you want to import data

What does the CASE statement do in SQL?

• It creates new tables

• It updates existing records

• It allows conditional logic in queries

• It deletes records

Which of the following is a benefit of pivoting?

• Eliminates the need for queries

• Improves data visualization

• Increases data storage

• Reduces data complexity

What is the result of using aggregate functions in pivoting?

• It creates duplicates

• It deletes data

• It filters data

• It summarizes data