Is it possible to combine WHERE conditions, GROUP BY grouping, and HAVING filter in a single SQL query?

Yes, in a single SQL query, you can use WHERE conditions, GROUP BY grouping, and HAVING filtering simultaneously.

• WHERE is used to filter rows before grouping.
• GROUP BY groups rows based on specified columns.
• HAVING filters the already grouped data based on aggregate conditions.

Example:

SELECT department, COUNT(*) AS employee_count
FROM employees
WHERE salary > 50000
GROUP BY department
HAVING COUNT(*) > 5;

In this query, employees with a salary above 50000 are selected first (WHERE), then they are grouped by departments (GROUP BY), and only those groups where the number of employees is greater than 5 are selected (HAVING).