If we do want to eliminate duplicates, we use the keyword __________in the aggregate expression.

The keyword you are looking for is DISTINCT. When using SQL (Structured Query Language) for querying databases, the DISTINCT keyword is employed within aggregate expressions to eliminate duplicate values from the results. For example, consider a scenario where you want to select unique users from a table that contains multiple entries for the same user. In this case, using SELECT DISTINCT column_name FROM table_name; would return only unique values for column_name, thereby filtering out any duplicates.

This is particularly useful in data analysis and reporting, where you may need to count unique entries, calculate the sum of a unique set of values, or gather statistics without over-representing certain data points due to redundancy. The use of DISTINCT can lead to more meaningful results by ensuring that calculations accurately reflect the unique entities within the dataset.