pool.connect().then(client=>{//insert 数据client.query("INSERT INTO student(name, age) VALUES($1::varchar, $2::int)", ["xiaoming", "20"]).then(res =>{ console.log("Insert Success")//如果是自增ID,有返回值的,在res里returnres; }) .then(res=>{//查询xiaomingreturnclient.query("...
pg是一个Node.js的PostgreSQL数据库驱动程序,它提供了一系列的方法来执行数据库查询和操作。其中,client.query()方法用于执行SQL查询语句。 在使用pg client.query()方法时,可以通过.then()方法来处理查询结果的回调函数,也可以使用async/await语法来处理异步操作。 pg模块的优势包括: 高性能:pg模块是基于libpq库开发...
You shouldn't disconnect the pool on every query, connection pool is supposed to be used to have "hot" connections. I usually have a global connection on startup and the pool connection close on (if) application stop; you just have to release the connection from pool every time the ...
index.spec.js: import { getAlerts } from './'; import { Client } from 'pg'; import { success, failure } from './handler'; jest.mock('pg', () => { const mClient = { connect: jest.fn(), query: jest.fn(), end: jest.fn(), }; return { Client: jest.fn(() => mClient...
Node.js是一个基于Chrome V8引擎的JavaScript运行环境,可以用于构建高性能的网络应用程序。它采用事件驱动、非阻塞I/O模型,使得它非常适合处理并发请求。Node.js具有轻量级、...
如果你的数据库在JSDate对象中返回UTC时间,那么它已经在做正确的事情了。你展示的代码返回了Date对象,...
在node-postgres的基础上,这个库添加了以下内容:Automatic connections Automatic transactions 强大的query-formatting引擎+查询生成 处理声明性查询结果的方法 用于集中处理的全局事件报告 对外部SQL文件的广泛支持 支持所有promise库在2015年成立之初,这个库只向基本驱动程序添加了承诺,因此命名为pg-promise。虽然保留了原来...
result().queryWithParams("SELECT * FROM ACCOUNT WHERE ACCOUNT = ? AND PASSWORD = ?", params,resultSetFuture); }else{ msg.reply(FAILURE); } }); updateResultFuture.setHandler(asyncResult->{ if(asyncResult.succeeded()){ msg.reply(SUCCESS); }else if(asyncResult.cause().getMessage().contains...
connection.query(sql, param, function (tErr, rows, fields) { if (tErr) { if (shouldAbort(tErr) != null) { console.log("事务失败," + sql_param + ",ERROR:" + tErr); throw tErr; } } else { return cb(null, 'ok'); }
pg_query.go Credit This is based on the output of libpg_query. This wraps the static library output and links it into a node module for use in js. All credit for the hard problems goes to Lukas Fittl. Additional thanks for node binding Ethan Resnick. Original Code and LicenseAbout...