Union, Intersect, and Difference set operations for ActiveRecord (also, SQL's UnionAll).
          ruby          ruby-gem          activerecord          set          query          sql          set-theory          arel          relational-databases          ruby-on-rails          relational-database          relational-algebra          set-operations          sets          activerecord-queries          activerecord-extension          sql-unionall          sql-union          sql-intersect          sql-except      
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            Updated
            
Aug 14, 2025  - Ruby