Here is a simplified version of my current dataset:
v1 v2 v3
null b c
a b c
a null c
I want to create a new column called 'v4' that would be a 1, ONLY if v1 is null, and 0, if v1 was not null.
The desired output would look like this
v1 v2 v3 v4
null b c 1
a b c 0
a null c 0
Any help with this would be greatly appreciated.
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