node-mysql:多条语句查询,ER_PARSE_ERROR

时间:2019-10-16 10:08:14

标签: mysql node.js express node-mysql

我正在尝试对MySQL数据库运行多语句查询。我正在使用node-mysql和ExpressJS。我通过将MultipleStatement设置为true来启用了多个语句查询:

const connection = mysql.createPool(config.databaseOptions, {multipleStatements: true});

我有以下多条语句查询:

app.get('/information', urlencodedParser, function (req, res) {
        var mysql = require('./resources/mysqlConnection');

        var qry = "SELECT e.emp_id, company_id, age, country FROM employee as e INNER JOIN company as c ON e.emp_id = c.emp_id WHERE e.emp_id = ?;SELECT * from players as p INNER JOIN teams as t ON p.team_id = t.team_id WHERE country = ?";

        mysql.query(qry, ["E00909", "Japan"], function(err, rows) {
            if (err) throw err;
            console.log(rows);
            var emp_data = rows[0];
            var team_data = rows[1];
            res.render('info.ejs', {data : emp_data});
        });

});

但是,当我运行服务器时,出现以下错误:

Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT * from players as p INNE'

我还阅读了其他有关多语句查询的文章,但是所有这些情况的解决方案是通过将multipleStatement设置为true来启用多语句查询。我已经这样做了,所以我不确定为什么会收到这个错误。我认为代码中的["E00909", "Japan"]数组是此问题的根源,但我不确定如何解决。进一步将数组写为['E00909', 'Japan']并不能解决问题。任何见解都会受到赞赏。

1 个答案:

答案 0 :(得分:1)

我会尝试在config.databaseOptions对象中设置选项,例如

const config = {
    databaseOptions: {
        host: "some_host",
        user: "some_user",
        password: "some_pw",
        database: "some_db",
        multipleStatements: true
    }
}

或者尝试:

config.databaseOptions.multipleStatements = true;

在创建池之前。

这为我解决了错误!

如果我省略此行,我将得到与您相同的错误:

ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT..