使用最少的处理能力运行第二个查询

Question

我试图弄清楚如何在nodejs中使用最少的处理能力来运行多个查询（此nodejs应用程序正在平板电脑中运行而没有大量内存）。

以下是情况（问题在第二个if语句之下）：

  connection.query("SELECT hashtag from user_information", function(err, rows, fields) {
    if (!err) {
        // Check to see if the user entered hashtag is found in the database
        // Create a variable to track if the item was found
        var wasFound = false;
         for(var i=0; i< rows.length; i++) {


          if (rows[i].hashtag == userEnteredHashtag) {

              res.render('delivery/chooseBox', {
                box_id: 'Box11',
                // Run a second query from box table and grab all of the `longestDimension` of Box11 such as it will come out as 11, 18, 24, etc. and store those numbers in the longestDimension key (increment each instance for example

                longestDimension1: '11',
                longestDimension2: '18',
                longestDimension3: '24',
               )
            });

               // Change the variable to true
               wasFound = true;

    //console.log(packageIdDatabase + 10);
          }

        }

基本上，我想从box表中运行第二个查询并获取box_id的所有longestDimension，例如它将显示为11,18,24，然后将这些值存储在longestDImension键中