The ROW_NUMBER() function in SQL is a window function that assigns a unique sequential integer to rows within a partition of a result set. It's commonly used for tasks like numbering rows, ...

When designing objects in SQL Server, we must follow certain best practices. For example, a table should have primary keys, identity columns, clustered and unclustered indexes, data integrity and ...

Here are design examples of how row-level security (RLS) can be used: A hospital can create a security policy that allows nurses to view data rows for their patients only. A bank can create a policy ...

When you use SELECT in a PL/SQL block, it’s important to make sure that exactly one row will always be returned by your query. If more than one row is returned, the TOO_MANY_ROWS exception occurs.