Question

 { Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ''mom12345'' at line 1}

我正在尝试使用节点js在mysql中编写一个登录查询，但出于某种原因，我不断收到上述错误。请有人帮助我。

var logininfo={
username:username,
password:password

};
con.query('SELECT id FROM userinfo WHERE username=? and password ?',logininfo, function (error, results, fields) {
            if (error) {
                console.log("error ocurred",error);

            } else {
                console.log('The solution is: ', results);
                if (results.length > 0) {
                    if ([0].password == password) {
                       console.log("Login Successful");

                    }
                    else {
                        console.log("Username and password donot match");
                    }
                }
            }
        })

    }

Answer 1

你忘了等于签名

WHERE username=? and password = ?
                           ---^

Answer 2

您的第二个参数应该是参数数组而不是对象。

所以改变：

    var logininfo={
    username:username,
    password:password
    };

要：

    var logininfo=[
    username,
    password
    ];

sql语法中的错误mysql node js？

2 个答案: