I have a table like the following and I have used GROUP_CONCAT(val) as LIST_Value
. I want to consider the mean of the this column and also the length of the values in each row. This AVG(GROUP_CONCAT(val))
and GROUP_CONCAT(AVG(val))
did not solve that.
I also read this link: MySQL pivot row into dynamic number of columns But, I could not find the answer for my problem.