国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

Home Web Front-end JS Tutorial Drizzle ORM Crash Course

Drizzle ORM Crash Course

Jan 14, 2025 pm 08:28 PM

Drizzle ORM Crash Course

Introduction

Drizzle ORM is a simple, lightwiegt ORM for TypeScript. It is designed to be simple to use and easy to understand. It is designed to be used with MySQL databases, but can be easily extended to work with other databases.

Get Started

Drizzle ORM supports PostgreSQL, MySQL, and SQLite. This guide will focus on MySQL, but the concepts are the same for all databases.
You can reach out more details on Drizzle ORM

Installation

To install Drizzle ORM, you need to install the package from npm.

npm i drizzle-orm pg dotenv
npm i -D drizzle-kit tsx @types/pg

npm i drizzle-orm pg dotenv - This command installs the Drizzle ORM package, the pg package, and the dotenv package. The pg package is required for PostgreSQL support, but it is not required for MySQL or SQLite.

npm i -D drizzle-kit tsx @types/pg - This command installs the Drizzle Kit package, the tsx package, and the @types/pg package. The Drizzle Kit package is required for Drizzle ORM to work with TypeScript.

Configuration

To configure Drizzle ORM, you need to create a .env file in the root of your project. This file should contain the following information:

DATABASE_URL=your-database-url

Replace your-database-url with the URL of your database. For example, if you are using MySQL, the URL should look like this:

DATABASE_URL=mysql://username:password@localhost:3306/database

Setup drizzle config in your drizzle.config.ts file.

import 'dotenv/config';
import { defineConfig } from 'drizzle-kit';

export default defineConfig({
  out: './drizzle',
  schema: './src/db/schema.ts',
  dialect: 'postgresql',
  dbCredentials: {
    url: process.env.DATABASE_URL!,
  },
});

?Create a Table

To create a table in your database, you need to define a schema in a file called schema.ts. This file should contain the following information:

import { pgTable, unique, integer, varchar } from 'drizzle-orm/pg-core';
import { sql } from 'drizzle-orm';

export const users = pgTable(
  'users',
  {
    id: integer().primaryKey().generatedAlwaysAsIdentity({
      name: 'users_id_seq',
      startWith: 1,
      increment: 1,
      minValue: 1,
      maxValue: 2147483647,
      cache: 1,
    }),
    name: varchar({ length: 255 }).notNull(),
    age: integer().notNull(),
    email: varchar({ length: 255 }).notNull(),
  },
  (table) => {
    return {
      usersEmailUnique: unique('users_email_unique').on(table.email),
    };
  }
);

We define a table called users with four columns: id, name, age, and email. The id column is an auto-incrementing primary key, and the name, age, and email columns are required.

?Connect to the Database

Create a index.ts file in the src/db directory and initialize the connection to the database.

import 'dotenv/config';
import { drizzle } from 'drizzle-orm/node-postgres';

const db = drizzle(process.env.DATABASE_URL!);

We have already define the DATABASE_URL in the .env file. We are using the drizzle function to connect to the database.

?Insert Data

To insert data into the users table, you can use the insert method on the db object.

import { users } from './schema';

const user = await db.insert(users).values({
  name: 'John Doe',
  age: 30,
  email: '
});

We are using the insert method on the db object to insert a new user into the users table. We are passing an object with the name, age, and email properties to the values method.

?Query Data

To query data from the users table, you can use the select method on the db object.

npm i drizzle-orm pg dotenv
npm i -D drizzle-kit tsx @types/pg

We are using the select method on the db object to query a user from the users table. We are using the where method to filter the results based on the id column.

?Update Data

To update data in the users table, you can use the update method on the db object.

DATABASE_URL=your-database-url

We are using the update method on the db object to update a user in the users table. We are using the set method to set the age column to 31, and the where method to filter the results based on the id column.

?Delete Data

To delete data from the users table, you can use the delete method on the db object.

DATABASE_URL=mysql://username:password@localhost:3306/database

We are using the delete method on the db object to delete a user from the users table. We are using the where method to filter the results based on the id column.

Conclusion

Drizzle ORM is a simple, lightweight ORM for TypeScript. It is designed to be simple to use and easy to understand. It is designed to be used with MySQL databases, but can be easily extended to work with other databases. You can reach out more details on Drizzle ORM

Thank You

Thank you for reading this guide. I hope you found it helpful. If you have any questions or feedback, please feel free to reach out to me. I would love to hear from you.

The above is the detailed content of Drizzle ORM Crash Course. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

JavaScript vs. Java: Which Language Should You Learn? JavaScript vs. Java: Which Language Should You Learn? Jun 10, 2025 am 12:05 AM

JavaScriptisidealforwebdevelopment,whileJavasuitslarge-scaleapplicationsandAndroiddevelopment.1)JavaScriptexcelsincreatinginteractivewebexperiencesandfull-stackdevelopmentwithNode.js.2)Javaisrobustforenterprisesoftwareandbackendsystems,offeringstrong

Which Comment Symbols to Use in JavaScript: A Clear Explanation Which Comment Symbols to Use in JavaScript: A Clear Explanation Jun 12, 2025 am 10:27 AM

In JavaScript, choosing a single-line comment (//) or a multi-line comment (//) depends on the purpose and project requirements of the comment: 1. Use single-line comments for quick and inline interpretation; 2. Use multi-line comments for detailed documentation; 3. Maintain the consistency of the comment style; 4. Avoid over-annotation; 5. Ensure that the comments are updated synchronously with the code. Choosing the right annotation style can help improve the readability and maintainability of your code.

The Ultimate Guide to JavaScript Comments: Enhance Code Clarity The Ultimate Guide to JavaScript Comments: Enhance Code Clarity Jun 11, 2025 am 12:04 AM

Yes,JavaScriptcommentsarenecessaryandshouldbeusedeffectively.1)Theyguidedevelopersthroughcodelogicandintent,2)arevitalincomplexprojects,and3)shouldenhanceclaritywithoutclutteringthecode.

Java vs. JavaScript: Clearing Up the Confusion Java vs. JavaScript: Clearing Up the Confusion Jun 20, 2025 am 12:27 AM

Java and JavaScript are different programming languages, each suitable for different application scenarios. Java is used for large enterprise and mobile application development, while JavaScript is mainly used for web page development.

Javascript Comments: short explanation Javascript Comments: short explanation Jun 19, 2025 am 12:40 AM

JavaScriptcommentsareessentialformaintaining,reading,andguidingcodeexecution.1)Single-linecommentsareusedforquickexplanations.2)Multi-linecommentsexplaincomplexlogicorprovidedetaileddocumentation.3)Inlinecommentsclarifyspecificpartsofcode.Bestpractic

Mastering JavaScript Comments: A Comprehensive Guide Mastering JavaScript Comments: A Comprehensive Guide Jun 14, 2025 am 12:11 AM

CommentsarecrucialinJavaScriptformaintainingclarityandfosteringcollaboration.1)Theyhelpindebugging,onboarding,andunderstandingcodeevolution.2)Usesingle-linecommentsforquickexplanationsandmulti-linecommentsfordetaileddescriptions.3)Bestpracticesinclud

JavaScript Data Types: A Deep Dive JavaScript Data Types: A Deep Dive Jun 13, 2025 am 12:10 AM

JavaScripthasseveralprimitivedatatypes:Number,String,Boolean,Undefined,Null,Symbol,andBigInt,andnon-primitivetypeslikeObjectandArray.Understandingtheseiscrucialforwritingefficient,bug-freecode:1)Numberusesa64-bitformat,leadingtofloating-pointissuesli

JavaScript vs. Java: A Comprehensive Comparison for Developers JavaScript vs. Java: A Comprehensive Comparison for Developers Jun 20, 2025 am 12:21 AM

JavaScriptispreferredforwebdevelopment,whileJavaisbetterforlarge-scalebackendsystemsandAndroidapps.1)JavaScriptexcelsincreatinginteractivewebexperienceswithitsdynamicnatureandDOMmanipulation.2)Javaoffersstrongtypingandobject-orientedfeatures,idealfor

See all articles