我发现node技术栈有三个库:pg, prisma, knex都可以用来连接postgresql数据库。 pg的指南在官网: 安装语句:$ npm install pg 数据库连接和操作代码样例: import { Client } from 'pg' const client = new Client() client.connect((err) => { client.query('SELECT $1::text as message', ['Hello world!
1、使用nodejs模块pg操作postgres数据库 const pg = require('pg') // 数据库配置 var config = { user: "wenbin.ouyang", host: 'localhost', database: "test", password: "", port: 5432, // 扩展属性 max: 20, // 连接池最大连接数 idleTimeoutMillis: 3000, // 连接最大空闲时间 3s } /...
collection("students"); let query={id:202204}; let result= await students.deleteOne(query); console.log(result); }finally{ await client.close(); } } run().catch(console.dir); 运行结果: 四、Nodejs访问MySQL 4.1、导入mysql模块 1、打开根目录,打开终端,初始化执行npm init -y; 2、导入mysql...
Open nodejs v18.17.1 / v20.9.0 - pg ^8.11.0 - slow select query #3098 Description Dimitris-Tzilopoylos opened on Nov 13, 2023 I am using the following query to retrieve users from database, and before this one i just perform a count(*) to retrieve the total number of users.SEL...
{ Pool } = require('pg')const pool = new Pool({ host: 'localhost', port: 5432, user: 'postgres', password: 'postgres', database: 'goods', max: 50, idleTimeoutMillis: 30000, connectionTimeoutMillis: 2000,})const getGoods = (request, response) => { pool.query('...
Whether you are querying with findAll/find or doing bulk updates/destroys you can pass awhereobject to filter the query. 无论你是通过findAll/find进行查询或是进行大量地updates/destroys操作,你都可以使用where对象来过滤查询 wheregenerally takes an object from attribute:value pairs, where value can ...
var PG = function(){ console.log("准备向***数据库连接...");};PG.prototype.getConnection = function(){ client.connect(function (err) { if (err) { return console.error('could not connect to postgres', err);} client.query('SELECT NOW() AS "theTime"', function (err, result) { if...
17727 1.2% 8.6% LazyCompile: *string /app/node_modules/pg-protocol/dist/buffer-reader.js:30:11611 1.0% 7.3% LazyCompile: *handleDataRow /app/node_modules/pg/lib/query.js:79:16478 0.8% 5.7% RegExp: (\d{1,})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})(\.\d{1,})...
pg_dump-UUSERNAME-W-Fc DATABASE>backup_file 1. 验证方法 数据恢复后,验证过程是确保数据完整性的重要步骤。我们将使用以下序列图展示验证流程。 UserDatabaseSystemUserDatabaseSystem发送查询返回数据校验数据完整性完成校验 验证时间表格如下。 数据校验代码示例如下。
Using find options is good and dead simple, but if you need a more complex query, you should use QueryBuilder instead. QueryBuilder allows more complex queries to be used in an elegant way:import { Photo } from "./entity/Photo" import { PhotoMetadata } from "./entity/PhotoMetadata" ...