HackerRank isn’t just a random collection of problems; they’ve organized their SQL section pretty well. You can find ...

When you create a pretend computer, you decide how its storage works. ‘Thick’ means it claims all the disk space it might ever need right away. ‘Thin’ is smarter; it only uses the space it’s actually ...

1 What is an inner join in SQL? 1 What is an outer join in SQL? 1 What is full join in SQL? 1 What is left join in SQL Server? 1 What is a right join in SQL Server? 1 What is database engine in SQL ...