Goal: Retrieve a column of how many differences in letters in each row. For instance
If you have a value "test" and another row has a value "testing ", then the differences is 4 letter between "test" and "testing ". The data of the column would be value 4
I have reflected about it and I don't know where to begin
id || value || category || differences
--------------------------------------------------
1 || test || a || 4
2 || testing || b || null
11 || candy || a || -2
12 || ca || b || null
Thank you!
