Question

I want to do a mathematic on a column of my table.
i have numbers in my column that i want to divide by 11 and then *0.5 and mines from frist number can i do somthing like this with only mysql? or need to a php file to do this ????

Answer 1

SELECT numcol, ((numcol / 11 ) * 0.5 - numcol) AS calccol
  FROM special_table;