从带有promise / resolve和async / await的函数返回MySql结果

Question

Edit: Question answered. Code is correct, just need to iterate through the results or access each element individually.

I'm writing a Discord bot with MySql. I need to check a table for the existence of the user before I can do other processing. The main body (not shown here) establishes the connection and collects the user commands, invoking the appropriate module. In this case, args[0] would have the value to search the table. The timing of the promise and await lines seems to be correct, as "Results" is printed after testUser returns. However, results is returning [object Object] instead of the rows (the table is not empty). Shouldn't resolve(rows) inside the function return the selected rows? I'm trying to avoid adding extra modules if I don't have to.

const discord = require("discord.js");
const mySql = require("mysql");

module.exports.run = async (bot, message, args, conn) => {

const results = await testUser(args[0], conn);
console.log("Results: " + results);
}

function testUser(userName, conn) {
    return new Promise((resolve, reject) => {
        conn.query(`SELECT * FROM user_master WHERE user_name = 
    '${userName}'`, (err, rows) => {
            if(err) reject(err);
            else resolve(rows);
        });
    });
}

Answer 1

The returned Object contains the result of the query and can be queried as mentioned in the comments. To give a complete example, this would be your code including looping the returned result:

const discord = require("discord.js");
const mySql = require("mysql");

module.exports.run = async (bot, message, args, conn) => {

  const results = await testUser(args[0], conn);
  results.forEach((row) => { 
    console.log(row); 
  });
}

function testUser(userName, conn) {
    return new Promise((resolve, reject) => {
        conn.query(`SELECT * FROM user_master WHERE user_name = 
    '${userName}'`, (err, rows) => {
            if(err) reject(err);
            else resolve(rows);
        });
    });
}