How do I test for non-null in Ruby::Sequel?

Question

I'm looking to do something like

User.select(...).where(:name != nil)

without writing something like

User.select(...).to_a.find_all {|user| user.name}

I can select for null values, but not for non-null. Is there a trick, or outside Sequel's domain?

Answer 1

You can use exclude instead of where.

User.select(...).exclude(name: nil)

Answer 2

The answer you seek is .where(Sequel.~(name: nil))

Read more here: https://github.com/jeremyevans/sequel/blob/master/doc/sql.rdoc

Answer 3

You can do this:

User.select(...).where('name IS NOT NULL')