Javascript 尝试使用NodeJS从SQLite数据库获取数据
我正试图使用NodeJS从SQLite数据库中提取数据,下面是@ShadowCode答案,我修改了代码如下Javascript 尝试使用NodeJS从SQLite数据库获取数据,javascript,node.js,sqlite,Javascript,Node.js,Sqlite,我正试图使用NodeJS从SQLite数据库中提取数据,下面是@ShadowCode答案,我修改了代码如下 const sqlite3 = require('sqlite3').verbose(); //open the database let db = new sqlite3.Database('src/assets/academia.db'); db.run("SELECT userid as id, firstname, lastname FROM users", function(
const sqlite3 = require('sqlite3').verbose();
//open the database
let db = new sqlite3.Database('src/assets/academia.db');
db.run("SELECT userid as id, firstname, lastname FROM users", function(err, row){
console.log(row.userid + " " + row.firstname + " " + row.lastname);
});
//close connection
db.close();
我收到一个错误,说它无法读取属性userID。如果我在数据库中运行sql语句,它会运行得很好
TypeError: Cannot read property 'userid' of undefined
at Statement.<anonymous> (C:\academia_2\src\get.js:7:21)
--> in Database#run('SELECT userid, firstname, lastname FROM users', [Function])
也许你的教程有点过时了,也许看看文档吧 看看这个片段,对我来说它起作用了
db.run("UPDATE tbl SET name = ? WHERE id = ?", "bar", 2);
谢谢,我去看看。