structure_dump

# File activerecord/lib/active_record/tasks/sqlite_database_tasks.rb, line 44
      def structure_dump(filename, extra_flags)
        args = []
        args.concat(Array(extra_flags)) if extra_flags
        args << db_config.database

        ignore_tables = ActiveRecord::SchemaDumper.ignore_tables
        if ignore_tables.any?
          ignore_tables = connection.data_sources.select { |table| ignore_tables.any? { |pattern| pattern === table } }
          condition = ignore_tables.map { |table| connection.quote(table) }.join(", ")
          args << "SELECT sql FROM sqlite_master WHERE tbl_name NOT IN (#{condition}) ORDER BY tbl_name, type DESC, name"
        else
          args << ".schema"
        end
        run_cmd("sqlite3", args, filename)
      end