extract_schema_and_table

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 688
      def extract_schema_and_table(name)
        schema, table = name.split('.', 2)

        unless table # A table was provided without a schema
          table  = schema
          schema = nil
        end

        if name =~ /^"/ # Handle quoted table names
          table  = name
          schema = nil
        end
        [schema, table]
      end