This technical problem deals with finding employees who have been with a company for more than 5 years. Given a table of data with employee start and end dates, the goal is to write a query that returns all employees who satisfy the 5-year criterion. An example input and output is provided.
About this solution: The solution above is optimal because it is the most efficient way to find the employees who have been with the company for more than 5 years.
Given a table with two columns, id and value, write a query to find the id of the row with the maximum value.
About this solution: The candidate's solution is correct and demonstrates a good understanding of how to find the maximum value in a table. The solution is also efficient, as it only requires one pass through the table.
The average salary of all employees in a company can be found using a SQL query. For example, if the employees table contains the following columns: ID, NAME, and SALARY, the average salary can be calculated by querying the table for the average value of the SALARY column.
About this solution: The candidate's solution is correct and demonstrates a level of completeness. The solution is also optimal, as it is the simplest solution that will return the correct result.