Scalability

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Databases / SQL DifficultyMedium SQL
Given a table of data with columns for name, email, and signup date, this SQL query will find the most recent signup for each email address.
About this solution: The solution above is optimal because it uses the MAX function to find the most recent signup date for each email address.
Nov 10
Databases / SQL DifficultyMedium SQL
Write a SQL query to find the cheapest product in a given table. The table schema is provided, and an example input and output are given.
About this solution: The candidate's solution is correct and demonstrates a good understanding of SQL.
Nov 09
Databases / SQL DifficultyMedium SQL
Given a table of data with columns for name, email, and signup date, this SQL query will find the most recent signup for each email address.
About this solution: This solution is correct and demonstrates a level of completeness. It solves the problem and uses a sensible approach.
Nov 05
Databases / SQL DifficultyMedium SQL
Given a table of data with columns for name, email, and signup date, this SQL query will find the most recent signup for each email address.
About this solution: This solution is correct and demonstrates a level of completeness. It solves the problem and uses a sensible approach.
Nov 05