instance method build_where

# File activerecord/lib/active_record/relation/query_methods.rb, line 947
    def build_where(opts, other = [])
      case opts
      when String, Array
        [@klass.send(:sanitize_sql, other.empty? ? opts : ([opts] + other))]
      when Hash
        opts = PredicateBuilder.resolve_column_aliases(klass, opts)

        tmp_opts, bind_values = create_binds(opts)
        self.bind_values += bind_values

        attributes = @klass.send(:expand_hash_conditions_for_aggregates, tmp_opts)
        add_relations_to_bind_values(attributes)

        PredicateBuilder.build_from_hash(klass, attributes, table)
      else
        [opts]
      end
    end