code: function (connectionInfo, query, params) {
      var connection;
  
      // Connection validation
      if (typeof connectionInfo.host !== 'string' || connectionInfo.host.length === 0) {
          return respond({
              success: false,
              data: {
                  err: 'Bad hostname provided.',
                  query: query,
                  connection: connectionInfo
              }
          });
      }
      if (typeof connectionInfo.user !== 'string' || connectionInfo.user.length === 0) {
          return respond({
              success: false,
              data: {
                  err: 'Bad username provided.',
                  query: query,
                  connection: connectionInfo
              }
          });
      }
  
      if (typeof connectionInfo.password !== 'string') {
          return respond({
              success: false,
              data: {
                  err: 'Bad password provided.',
                  query: query,
                  connection: connectionInfo
              }
          });
      }
      if (typeof connectionInfo.database !== 'string' || connectionInfo.database.length === 0) {
          return respond({
              success: false,
              data: {
                  err: 'Bad database provided.',
                  query: query,
                  connection: connectionInfo
              }
          });
      }
  
  
      // Return if no sql query specified
      if (query.length === 0) {
          return respond({
              success: false,
              data: {
                  err: 'No SQL query specified.'
              }
          });
      }
  
      // Create the connection to the database
      connection = mysql.createConnection(connectionInfo);
  
      // Connect to the database
      connection.connect();
  
      // Do the query
      connection.query(query, params, function (err, rows, fields) {
          // End the connection
          connection.end();
  
          // Return the error and stop
          if (err) {
              return respond({
                  success: false,
                  data: {
                      err: err,
                      query: query,
                      connection: connectionInfo
                  }
  
              });
          }
  
          // Do the callback
          respond({
              success: true,
              data: {
                  rows: rows,
                  fields: fields
              }
          });
      });
  }
docs: Execute mysql query
  @param   {object} connectionInfo Object containing information about the connection
  @param   {string} query          The query to execute
  @param   {Array}  params         Params to use in the query
  @returns {mixed}  Void