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api_postgre

v0.0.2

Published

一个基于Node.js的PostgreSQL数据库链式调用库,支持类型校验、事务、SQL生成等功能,适合高效开发PostgreSQL应用。

Readme

api_postgre

一个基于Node.js的PostgreSQL数据库链式调用库,支持类型校验、事务、SQL生成等功能,适合高效开发PostgreSQL应用。

安装

npm install api_postgre

快速开始

1. 初始化数据库连接

import { DB } from "api_postgre"
await DB.connect({
  applicationName: "myapp",
  port: 5432,
  hostname: "localhost",
  database: "testdb",
  user: "postgres",
  password: "yourpassword",
  poolNum: 10
})

2. 链式构建SQL并执行

import { Sql } from "api_postgre"
// 查询
await new Sql("users").where({ name: "张三" }).findOne()

// 查询多条
await new Sql("users").limit(2).total().find()

// 插入
await new Sql("users").insert({ name: "李四", age: 20 })

// 更新
await new Sql("users").where({ id: 1 }).update({ age: 21 })

// 删除
await new Sql("users").where({ id: 1 }).delete()

// 逻辑删除,更新某条数据删除标识
await new Sql("users").where({ id: 1 }).remove({ isDel: 1 })

// 指定表架构,默认public
await new Sql("users").schema("user").where({ name: "张三" }).findOne()

4. 事务支持

const tx = await DB.createTransaction()
try {
    await new Sql("users").transaction(tx).insert({ name: "事务用户1" })
    await new Sql("users").transaction(tx).insert({ name: "事务用户2" })
    await tx.commit()
} catch (e) {
    await tx.rollback()
} finally {
    tx.release()
}

5. 定义数据模型(可选)

import { Schema } from "api_postgre"
const userSchema = new Schema({
    id: { type: Number, required: true },
    name: { type: String, required: true },
    age: { type: Number }
})
console.log(userSchema.create({id: 1, name: "用户", age: 18}))

主要特性

  • 链式调用构建SQL
  • 支持事务
  • 类型校验与Schema定义

License

MIT

备注:

1、bigint、bigint[]、numeric、numeric[] 返回字符串调整为返回number类型(注意不要存超过number的最大数值)

2、timestamp、timestamp[] 直接返回字符串(注意直接存时间字符串)