SQL Practice Questions

Sharpen your SQL proficiency and elevate your confidence for that upcoming interview or project. Explore a diverse mix of SQL problems that cover a spectrum of complexities. Each question is designed to expand your knowledge and reinforce your understanding of SQL concepts. Explore, learn, and conquer SQL complexities one question at a time!

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Output the last name of users whose last name is greater than 6 characters long.

Perform a SELF JOIN of the payments table onto itself and return all columns.

Select the last row from the founder table without using the LIMIT clause.

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Based on dob of a founder, display year, month, day in 3 separate columns.

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Perform a SELF JOIN of the users table onto itself and return all columns.

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Get the values and counts of purchase types that appear 20 or more times.

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Get the second largest transaction amount from the payments table.

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Get the transaction history of the user name 'Carole Drummond'.

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Return the 2 companies that were founded in the same year.

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What percent of users are older than 45 years of age?

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