The usage of the word “distinct” in databases.

DISTINCT is used in a database to return unique values in the result set.

In a SELECT statement, you can use the DISTINCT keyword to specify that the result set should not include duplicate values. For example, if there is a table named “employees” with employee names and department information, to retrieve all unique department information, you can use the following SELECT statement:

Retrieve unique department names from the employees table.

This will retrieve all unique department information from the employees table.

It is important to note that using the DISTINCT keyword may result in a performance decrease in the query, as the database needs to carry out additional operations to filter out duplicate data. Therefore, efficiency should be carefully considered when using DISTINCT in a query.