Introduction to SQL: In the realm of relational databases, Structured Query Language (SQL) serves as a powerful tool for managing and manipulating data. Among its many capabilities, SQL offers a set of aggregate functions that allow users to perform calculations on groups of rows to derive meaningful insights from large datasets.

In both traditional relational systems and big data technologies, most of the functions specified in this series are common. An aggregate function or aggregation function in database management is a function where the values of multiple rows are grouped

In both traditional relational systems and big data technologies such as Apache Hive and Apache Impala, most of the functions specified in this series are common. An aggregate function or aggregation function in database management is a function where the values of multiple rows are grouped together to form a single summary value. The dataset on which we are about to practice the aggregate…