Finding the percentage of NULL values for each column in a table.

Scenario

Let`s create a scenario where you are working on data validation and data analysis and got the requirement in which you need to find the Percentage of Null values in every column for all the tables in SQL Server Database. This can be really helpful in analysis to know how much data you are really getting or you are getting no values (Null) and plan the storage. Also depending upon the analysis we can find some records those should not be Null but you have receive Null for those Columns, so data corrections can be next step.