12 lines
492 B
MySQL
12 lines
492 B
MySQL
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/*21. Write a query in SQL to display the country name, city, and number of those departments where at leaste 2 employees
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are working.*/
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SELECT country_name,city, COUNT(department_id)
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FROM countries
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JOIN locations USING (country_id)
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JOIN departments USING (location_id)
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WHERE department_id IN
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(SELECT department_id
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FROM employees
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GROUP BY department_id
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HAVING COUNT(department_id)>=2)
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GROUP BY country_name,city;
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