Create a view by Filter custom column has no data

Question

I have document library and it has 3 columns ( column1,columm2,column3) they are belonging to a content type.

Here How I create a view and it will show only those documents that column3 has no value.

Answer 1

Set Filter like below.

Select Column3 Is Equal To "" (do not enter anything in textbox)

Answer 2

In your view, filter content on column3 as is equal to and leave the value field empty. In the example below, my column name is "Sometimes empty".

This will filter out items that doesn't have a value in column3.