# File lib/rubyrep/connection_extenders/mysql_extender.rb, line 38
      def referenced_tables(tables)
        rows = self.select_all("select distinct table_name as referencing_table, referenced_table_name as referenced_table\nfrom information_schema.key_column_usage\nwhere table_schema = database()\nand table_name in ('\#{tables.join(\"', '\")}')\n")
        result = {}
        rows.each do |row|
          unless result.include? row['referencing_table']
            result[row['referencing_table']] = []
          end
          if row['referenced_table'] != nil
            result[row['referencing_table']] << row['referenced_table']
          end
        end
        tables.each do |table|
          result[table] = [] unless result.include? table
        end
        result
      end