How to calculate mode from database

Question

I have county name, year and price. I am trying to calculate mode however I am not sure how, I am looking for a simplest possible command.

SELECT COUNT(Price_€)AS Frequency FROM `sales20102015` WHERE Date_of_Sale LIKE '%2010%' AND County = 'Monaghan'

this will show a number of total rows in the database...

any ideas? thanks

Answer 1

This query will select the single most common price, and the number of occurences:

SELECT Price_€, COUNT(Price_€) FROM `sales20102015` 
WHERE Date_of_Sale LIKE '%2010%' AND County = 'Monaghan'
GROUP BY Price_€
ORDER BY COUNT(Price_€) DESC
LIMIT 1;