Employee Count Per Department Query | Dataford Interview Questions

IFS maintains organizational data in emp_tab and dept_tab. Write a PostgreSQL query that reports the number of employees assigned to every department.

Requirements

Return the department name and employee count.
Include departments with zero employees.
Exclude employees whose dept_id does not match a department, while still retaining all departments.
Order the result alphabetically by department name.

Schema

emp_tab

Column	Type	Description
name	VARCHAR(100)	Employee name
dept_id	INT	Department identifier assigned to the employee

dept_tab

Column	Type	Description
dept_idPK	INT	Unique department identifier
dept_name	VARCHAR(100)	Department name

Your question is Employee Count Per Department Query. Start with the requirements and the two tables in the Question tab.

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