Drizzle ORM Schema to GraphQL Schema Generator

Transform Drizzle ORM TypeScript schemas into clean GraphQL SDL types, inputs, queries, and mutations with inverted nullability.

At a glance

Drizzle ORM Schema to GraphQL Schema Generator is a free developer utility that transforms Drizzle ORM TypeScript schemas into GraphQL Schema Definition Language (SDL). It handles inverted nullability (.notNull() to !), maps column data types to GraphQL scalars, infers relations, and generates types, input objects, queries, and mutations 100% client-side in browser memory.

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100% Client-Side Drizzle ORM to GraphQL Schema Generator

Zero Server Uploads

Transform Drizzle ORM schemas into GraphQL SDL types, inputs, queries, and mutations with inverted nullability, relations, and enums.

Local Browser Sandbox
Presets:
0 chars
Instant client-side compile 
# Click "Generate GraphQL Schema" or pick a Preset above.

Inverted Nullability Semantics

Drizzle columns chained with .notNull() are translated to required GraphQL fields with exclamation marks (field: Type!), while unconstrained columns remain properly nullable (field: Type).

Foreign Key & Relations Parsing

Extracts both inline .references(() => table.id) foreign keys and Drizzle relations() blocks, mapping them into typed GraphQL object and list relationship fields.

Complete Query & Mutation Suite

Generates standard CRUD operations: root queries (list and single lookup), mutations (create, update, delete), and dedicated input objects with auto-increment ID omission.

Why Use This Drizzle ORM Schema to GraphQL Schema Generator?

Converts Drizzle ORM schemas into clean GraphQL SDL type definitions
Accurately maps inverted nullability (.notNull() to !, unadorned to nullable)
Supports PostgreSQL (pgTable), MySQL (mysqlTable), and SQLite (sqliteTable)
Infers nested object and array fields from foreign keys and relations() blocks
Generates root Query, Mutation operations, and Create/Update input types
100% client-side execution with complete privacy: zero server transmissions

How to Use Drizzle ORM Schema to GraphQL Schema Generator

1

Paste Drizzle ORM Schema

Paste your Drizzle TypeScript schema containing pgTable, mysqlTable, or sqliteTable into the editor or select a preset.

2

Configure Generation Options

Toggle root Query, Mutation, and Input object generation, ID field types, and custom scalar definitions.

3

Copy or Download GraphQL SDL

Copy the generated GraphQL SDL types and operations or download as a .graphql file.

Drizzle ORM Schema to GraphQL SDL example

Demonstrates converting pgTable with .notNull() on name to non-null String! and bio to nullable String, plus automatic root Query generation.

Drizzle TypeScript Schema Source 
export const users = pgTable('users', {
  id: serial('id').primaryKey(),
  name: varchar('name', { length: 255 }).notNull(),
  bio: text('bio'),
});
GraphQL SDL Processed 
type User {
  id: ID!
  name: String!
  bio: String
}

type Query {
  users: [User!]!
  user(id: ID!): User
}

Technical Specifications & Engine Details

Technical specifications and engine details for Drizzle ORM Schema to GraphQL Schema Generator
Specification Details
Supported Formats TYPESCRIPT, TEXT → GRAPHQL, TEXT
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Modern browser with ES2020 JavaScript support.
Performance Constraints Pure client-side conversion. Parses standard Drizzle ORM table and relations helper syntax.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

Your Drizzle schema remains strictly on your local device. Zero data is transmitted to external servers.

Frequently Asked Questions

How does inverted nullability work between Drizzle ORM and GraphQL?
In Drizzle ORM, columns are nullable by default unless chained with .notNull(). In GraphQL SDL, fields are nullable by default unless marked with an exclamation mark (!). The generator maps Drizzle .notNull() columns to GraphQL non-null fields (Type!) and optional columns to nullable fields (Type).
How are Drizzle relations converted to GraphQL?
Columns with .references() and Drizzle relations() one() helpers are converted into nested single-object fields (e.g. user: User). Drizzle relations() many() helpers are converted into list fields (e.g. posts: [Post!]!).
Is my Drizzle ORM schema data kept private?
Yes, 100%. All schema parsing, type inference, and GraphQL generation occur entirely inside your browser's JavaScript engine. No code is transmitted to external servers.

Methodology

This tool runs entirely in your browser. The example above shows a representative input and the result it produces.

Last updated .

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