Test is combined from various tasks. SQL task and Choice questions. All evaluated automatically.
SQL | Fill sparse table - Write a query that will return the list of all users with the creation date and return the date from the previous not-null row for the entries affected with the bug.
Tested skills: HSQLDB, MySQL, SQL
5 choice questions assessing knowledge of SQL
Tested skills: SQL
We automatically score multi-choice tests and programming tasks and evaluate candidate code for logical correctness, time efficiency and code quality.