ER_PARSE_ERROR：您的 SQL 语法有错误答案

【问题标题】：ER_PARSE_ERROR: You have an error in your SQL syntaxER_PARSE_ERROR：您的 SQL 语法有错误
【发布时间】：2018-07-14 11:24:42
【问题描述】：

我正在尝试在 mysql 中选择一行，其中我的变量 req.body.email 位于 Email_Address 列中这是我的代码 sn-p

app.post('/login', function(req, res){

con.query("select * from people where Email_address= "+ req.body.email, (err, res) => {
    if(err) {
        console.log('the email '+ req.body.email +'does not exist in the database');
        throw err;
    }
    else{
        console.log('selected');
        if(password == req.body.password)
            //res.redirect('index', { title: 'Hey', message: 'Hello there!' });
            res.send('hello');   
    }



});

但我在下面收到错误

错误：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 '@gmail.com' at line 1

关于如何解决它的任何想法

【问题讨论】：

通过添加找到它： var queryy = "select * from people where Email_address=? "; con.query(queryy,[req.body.email], (err, res) => {...}

标签： javascript mysql node.js

【解决方案1】：

你需要在邮件参数中添加'，更改

con.query("select * from people where Email_address= "+ req.body.email

到

con.query("select * from people where Email_address= '"+ req.body.email +"'"

【讨论】：