Showing Number of Nulls for Each Field

[#1]

I would like to create a table that lists every field, which has columns for the total number of nulls, the percentage of rows that have a null, etc. What is the best way to go about this? I have a pivot table that uses $Field as the dimension, but I am unsure how to count the null values in Qlikview.

[hectorgarcia]

thanks Settu for your contribution with the field observer.

Is it possible to generate the same table but in the script?  to create data qulaity qvd's with this content?