MySQL Aggregate Functions and Group by- Exercises, Practice, Solution

Aggregate Functions and Group by [14 exercises with solution]

1. Write a query to list the number of jobs available in the employees table. Go to the editor

Sample table: employees

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2. Write a query to get the total salaries payable to employees. Go to the editor

Sample table: employees

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3. Write a query to get the minimum salary from employees table. Go to the editor

Sample table: employees

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4. Write a query to get the maximum salary of an employee working as a Programmer. Go to the editor

Sample table: employees

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5. Write a query to get the average salary and number of employees working the department 90. Go to the editor

Sample table: employees

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6. Write a query to get the highest, lowest, sum, and average salary of all employees. Go to the editor

Sample table: employees

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7. Write a query to get the number of employees with the same job. Go to the editor

Sample table: employees

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8. Write a query to get the difference between the highest and lowest salaries. Go to the editor

Sample table: employees

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9. Write a query to find the manager ID and the salary of the lowest-paid employee for that manager. Go to the editor

Sample table: employees

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10. Write a query to get the department ID and the total salary payable in each department. Go to the editor

Sample table: employees

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11. Write a query to get the average salary for each job ID excluding programmer. Go to the editor

Sample table: employees

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12. Write a query to get the total salary, maximum, minimum, average salary of employees (job ID wise), for department ID 90 only. Go to the editor

Sample table: employees

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13. Write a query to get the job ID and maximum salary of the employees where maximum salary is greater than or equal to \$4000. Go to the editor

Sample table: employees

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14. Write a query to get the average salary for all departments employing more than 10 employees. Go to the editor

Sample table: employees

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... More

Structure of 'hr' database:

MySQL Code Editor:

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