Question

当我对node-mssql模块使用以下查询时，它会给出一个错误，指出存在

Invalid column name 'L'.

出于某种原因，它认为like语句中的值是列名。

'SELECT TOP 10 * From [Products] WHERE [Code] LIKE "%LO%"

我需要使用某种特殊语法

完整代码（来自mssql npm示例）：

var express = require('express');
var app = express();

app.get('/', function (req, res) {

    var sql = require("mssql");

    // config for your database
    var config = {
        user: 'username',
        password: 'password',
        server: '192.168.0.165\\database', // You can use 'localhost\\instance' to connect to named instance 
        database: 'Products',

        options: {
            encrypt: false // Use this if you're on Windows Azure 
        }
    }

    // connect to your database
    sql.connect(config, function (err) {

        if (err) console.log(err);

        // create Request object
        var request = new sql.Request();

        // query to the database and get the records
        request.query('select TOP 10 * From [Products] WHERE [Code] LIKE "%LO%"', function (err, recordset) {

            if (err) console.log(err)
                var items = [];
                recordset.forEach(function(row){
                    items.push(row.Code);
                })

            res.send(items);

        });
    });
});

var server = app.listen(5000, function () {
    console.log('Server is running..');
});

Answer 1

在sql语句中使用单引号时，必须转义＆＃39;字符。

例如：

'SELECT TOP 10 * FROM [Products] WHERE [Code] LIKE \'%LO%\''

nodejs mssql语法错误

1 个答案: