This technical problem asks the reader to write a SQL query to find the top 10 customers by total spend. The table of customer data is provided as an example, and the expected output is also provided.
About this solution: The candidate's solution is correct and demonstrates a good understanding of SQL. The solution is optimal, using the ORDER BY and LIMIT clauses to sort the table by total_spend in descending order and then limit the results to the top 10 customers.
This question asks for a cursor that will print the id, start, and end times for each row in a table. The input table has three columns: id, start, and end. The example output should print the id and start and end times for each row in the table, as shown in the example output.
About this solution: The solution above is optimal because it is the simplest solution that will work.