instance method virtual_tables

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 351
      def virtual_tables
        query = <<~SQL
          SELECT name, sql FROM sqlite_master WHERE sql LIKE 'CREATE VIRTUAL %';
        SQL

        query_rows(query).each_with_object({}) do |(table_name, sql), memo|
          _, module_name, arguments = sql.match(VIRTUAL_TABLE_REGEX).to_a
          memo[table_name] = [module_name, arguments]
        end.to_a
      end