What is the COUNT function in Pig used for?

In SQL, the COUNT function is used to calculate the number of rows in a query result. In Pig, the COUNT function is also used to calculate the number of tuples in a relation. By using the COUNT function, users can quickly understand how many elements are included in a relation, providing a better understanding of the size and structure of the dataset. The COUNT function is typically used in conjunction with the GROUP BY statement to calculate the number of tuples in each group.