mysql - 调用退出后， Node Mysql 无法将查询入队

Question

在哪里关闭 mysql 连接？

我需要按顺序运行查询。我目前正在编写如下代码:

var sqlFindMobile = "select * from user_mobiles where mobile=?";
var sqlNewUser = "insert into users (password) values (?)";
//var sqlUserId = "select last_insert_id() as user_id";
var sqlNewMobile = "insert into user_mobiles (user_id, mobile) values (?,?)";
connection.connect(function(err){});
var query = connection.query(sqlFindMobile, [req.body.mobile], function(err, results) {
    if(err) throw err;
    console.log("mobile query");
    if(results.length==0) {
        var query = connection.query(sqlNewUser, [req.body.password], function(err, results) {
            if(err) throw err;
            console.log("added user");
            var user_id = results.insertId;
            var query = connection.query(sqlNewMobile, [user_id, req.body.mobile], function(err, results) {
                if(err) throw err;
                console.log("added mobile");
                    //connection.end();
                });
        });
    }
});
//connection.end();

(我是node、npm-express和npm-mysql的初学者。我试过搜索“express mysql cannot enqueue”以找到相关问题，但没有找到。)

Answer 1

我用这个方法解决了这个问题:

connection.end() 在您的 connection.query 函数中

固定代码是here