Seems like a simple question, but I’ve never found a good answer to this and 
similar issues.

I would think it was safe to let me add columns to a view on which other views 
depend, but Postgres won’t let me.

I can imagine ways of sort-of dealing with this. I might maintain a SQL file 
with views to create in a suitable order, Then I could drop all views, edit the 
definition of one, then run the file, but this is awfully tedious.

What is best practice in this situation?

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