MAX/MIN giving me wrong values in mysql

Question

I am trying to get the MAX() or the MIN() value of a dataset.

Sample data:

equipment_id, value, updateTimestamp

7         


        

Answer 1

The value appears to be stored as a string, rather than as a number. Try this instead:

SELECT dv.equipment_id, ROUND(MIN(cast(dv.value as decimal(5, 2))), 2) as value