Prisma.js: We found changes that cannot be executed

I've used prisma.js as an ORM in my project.

After executing the npx prisma migrate dev --name rename_and_add_some_columns, I got this error:

We found changes that cannot be executed

Error Details:

Step 1 Added the required column CategoryId to the Post table without a default value. There are 2 rows in this table, it is not possible to execute this step. • Step 1 Added the required column ModifiedDate to the Post table without a default value. There are 2 rows in this table, it is not possible to execute this step. • Step 2 Added the required column ModifiedDate to the Profile table without a default value. There are 1 rows in this table, it is not possible to execute this step. • Step 4 Added the required column ModifiedDate to the User table without a default value. There are 2 rows in this table, it is not possible to execute this step.

You can use prisma migrate dev --create-only to create the migration file, and manually modify it to address the underlying issue(s). Then run prisma migrate dev to apply it and verify it works.

How can I solve it?

// This is my Prisma schema file,

datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model Category {
  Id           Int      @id @default(autoincrement())
  CreatedDate  DateTime @default(now())
  ModifiedDate DateTime @updatedAt
  Title        String   @db.VarChar(50)
  IsActive     Boolean
  Posts        Post[]
}

model Post {
  Id                 Int       @id @default(autoincrement())
  CreatedDate        DateTime  @default(now())
  ModifiedDate       DateTime  @updatedAt
  Title              String    @db.VarChar(255)
  Description        String?
  IsPublished        Boolean   @default(false)
  IsActive           Boolean   @default(true)
  IsActiveNewComment Boolean   @default(true)
  Author             User      @relation(fields: [AuthorId], references: [Id])
  AuthorId           Int
  Comment            Comment[]
  Tag                Tag[]     @relation("TagToPost", fields: [tagId], references: [Id])
  tagId              Int?
  Category           Category  @relation(fields: [CategoryId], references: [Id])
  CategoryId         Int
}

model User {
  Id           Int       @id @default(autoincrement())
  CreatedDate  DateTime  @default(now())
  ModifiedDate DateTime  @updatedAt
  Email        String    @unique
  Name         String?
  Posts        Post[]
  Profile      Profile?
  Comments     Comment[]
}

model Profile {
  Id           Int      @id @default(autoincrement())
  CreatedDate  DateTime @default(now())
  ModifiedDate DateTime @updatedAt
  Bio          String?
  User         User     @relation(fields: [UserId], references: [Id])
  UserId       Int      @unique
}

model Comment {
  Id           Int      @id @default(autoincrement())
  CreatedDate  DateTime @default(now())
  ModifiedDate DateTime @updatedAt
  Comment      String
  WrittenBy    User     @relation(fields: [WrittenById], references: [Id])
  WrittenById  Int
  Post         Post     @relation(fields: [PostId], references: [Id])
  PostId       Int
}

model Tag {
  Id           Int      @id @default(autoincrement())
  CreatedDate  DateTime @default(now())
  ModifiedDate DateTime @updatedAt
  Title        String   @unique
  Posts        Post[]   @relation("TagToPost")
}

In order to run this migration, you need to:

1. Create the fields first as optional and then run migrate

2. Fill the fields first with the required date.

3. Remove the optional (?) from the field.

Prisma automatically adds @updatedAt (it's not done at the database level) so these steps need to be followed.