cache_sql

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 76
        def cache_sql(sql)
          result =
            if @query_cache.has_key?(sql)
              log_info(sql, "CACHE", 0.0)
              @query_cache[sql]
            else
              @query_cache[sql] = yield
            end

          if Array === result
            result.collect { |row| row.dup }
          else
            result.duplicable? ? result.dup : result
          end
        rescue TypeError
          result
        end