What SQL query is used to count the number of employees in each department? SELECT COUNT(*) FROM Employees GROUP BY Department;SELECT COUNT(*) AS TotalEmployees FROM Employees GROUP BY Department;SELECT COUNT(DISTINCT Department) FROM Employees;SELECT COUNT(Department) FROM Employees GROUP BY Department;
Question
What SQL query is used to count the number of employees in each department? SELECT COUNT() FROM Employees GROUP BY Department;SELECT COUNT() AS TotalEmployees FROM Employees GROUP BY Department;SELECT COUNT(DISTINCT Department) FROM Employees;SELECT COUNT(Department) FROM Employees GROUP BY Department;
Solution
The correct SQL query to count the number of employees in each department is:
SELECT Department, COUNT(*) AS TotalEmployees
FROM Employees
GROUP BY Department;
Here's a step-by-step explanation:
-
SELECT Department, COUNT(*) AS TotalEmployees: This part of the query selects the department and counts the number of rows (employees) in each department. TheAS TotalEmployeespart is optional and is used to rename the count column to "TotalEmployees". -
FROM Employees: This part specifies the table from which to select the data, in this case, the "Employees" table. -
GROUP BY Department: This part groups the selected data by the "Department" column. This means that the count will be calculated for each unique department in the "Employees" table.
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