Consider an employee database with two relationsemployee (employee_name, street, city)works (employee_name, company_name, salary) where the primary keys are underlined. Write a function avg_salary that takes a company name as an argument and finds the average salary of employees at thatcompany. Then, write an SQL statement, using that function, to find companieswhose employees earn a higher salary, on average, than the average salary at“First Bank”.

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