Using Prisma Migrate

JavaScript

PostgreSQL

Creating the database schema

In this guide, you'll use Prisma Migrate to create the tables in your database. Add the following data model to your Prisma schema in prisma/schema.prisma:

prisma/schema.prisma

model Post {
  id        Int      @id @default(autoincrement())
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  title     String   @db.VarChar(255)
  content   String?
  published Boolean  @default(false)
  author    User     @relation(fields: [authorId], references: [id])
  authorId  Int
}

model Profile {
  id     Int     @id @default(autoincrement())
  bio    String?
  user   User    @relation(fields: [userId], references: [id])
  userId Int     @unique
}

model User {
  id      Int      @id @default(autoincrement())
  email   String   @unique
  name    String?
  posts   Post[]
  profile Profile?
}

To map your data model to the database schema, you need to use the prisma migrate CLI commands:

npx prisma migrate dev --name init

This command does two things:

1. It creates a new SQL migration file for this migration
2. It runs the SQL migration file against the database

note

generate is called under the hood by default, after running prisma migrate dev. If the prisma-client-js generator is defined in your schema, this will check if @prisma/client is installed and install it if it's missing.

Great, you now created three tables in your database with Prisma Migrate 🚀