How do you group by department in SQL with inner join?

Can I use inner join and group by together?

Using Group By with Inner Join SQL Inner Join permits us to use Group by clause along with aggregate functions to group the result set by one or more columns. Group by works conventionally with Inner Join on the final result returned after joining two or more tables.

How do I join an employee and department table?

The above inner join query joins the Employee table and Department table and retrieves records from both the tables where Employee. DeptId = Department. DeptId . It only fetches records from both the tables where DeptId in the Employee table matches with the DeptId of the Department table.

How does group by work in SQL internally?

The GROUP BY Statement in SQL is used to arrange identical data into groups with the help of some functions.GROUP BY clause is used with the SELECT statement.In the query, GROUP BY clause is placed after the WHERE clause.In the query, GROUP BY clause is placed before ORDER BY clause if used any.