# 在云函数中访问第三方数据库
* 云函数安装依赖
`npm i mysql2`
>实例代码
```JavaScript
const cloud = require('wx-server-sdk')
const mysql = require('mysql2/promise')
exports.main = async (event, context) => {
const connection = await mysql.createConnection({
host:'ip',
user:'root',
database:'table'
});
const [rows,fields] = await connection.execute('SELECT * FROM `table` WHERE `name` = ? AND `age` > ? ',['Jack',14]);
return rows;
}
```
