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This answer is NOT reliable. "limit 1" will only show one MAX record - what if we have two or more records with the MAX earnings? Solution would be:
select (salary * months) as earnings, count(*)
from employee
group by salary * months
having earnings = (
select max(salary * months)
from employee);
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This answer is NOT reliable. "limit 1" will only show one MAX record - what if we have two or more records with the MAX earnings? Solution would be: select (salary * months) as earnings, count(*) from employee group by salary * months having earnings = ( select max(salary * months) from employee);