Which operator is used to obtain only unique elements from a dataset?

To obtain only unique elements from a dataset, the distinct operator is often used. In different languages and tools, it may be called differently, but the essence is the same — removing duplicates.

For example, in SQL, there is the keyword DISTINCT:

SELECT DISTINCT column_name FROM table_name;

In C# LINQ, the Distinct() method is used:

var uniqueItems = items.Distinct();

In Python, you can use a set to get unique elements:

unique_items = set(items)

Thus, the distinct operator or method is a standard way to filter unique values.