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Support for `Json` field type in SQLite

Freshabout 20 hours ago
Mar 14, 20260 views
Confidence Score95%
95%

Problem

Problem SQLite has had support for JSON field type for a while. `Sequelize` supports this field type on par with Postgres and MySQL. Lack of support for this field type by Prisma is preventing us from porting over our project. SQLite is a great bootstrapping technology that allows developers to quickly prototype applications without introducing new dependencies such as docker or worry about running yet another service in the development flow. JSON field type gives us the option to have a `nosql` database colocated in a `sql` database. Suggested solution Please implement support for this feature. See JSON ~~Extension~~ documentation and refer to `Sequelize`'s implementation if required. Alternatives Defer migration to Prisma and stick with `Sequelize`. Maintain status quo. Additional context cc: @ryands17 ref: https://github.com/prisma/prisma/discussions/3575

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2 Fixes

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Implement JSON Field Type Support in Prisma for SQLite

Medium Risk

Prisma currently lacks support for the JSON field type in SQLite, which limits developers from utilizing SQLite's capabilities for storing JSON data. This absence hinders the migration of projects that rely on JSON fields in other databases like PostgreSQL and MySQL.

Awaiting Verification

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  1. 1

    Review SQLite JSON Extension Documentation

    Familiarize yourself with the SQLite JSON extension documentation to understand how JSON data is stored and queried in SQLite. This will provide the necessary context for implementing support in Prisma.

  2. 2

    Analyze Sequelize's Implementation

    Examine how Sequelize implements JSON field type support for SQLite. Identify key methods and patterns that can be adapted for Prisma's architecture.

  3. 3

    Develop JSON Field Type Support in Prisma

    Implement the JSON field type in Prisma's SQLite connector. This involves modifying the schema definitions, query builders, and type mappings to accommodate JSON data.

    typescript
    type JSON = { [key: string]: any };
  4. 4

    Create Unit Tests for JSON Field Type

    Write comprehensive unit tests to ensure that the JSON field type behaves as expected. Test scenarios should include inserting, querying, and updating JSON data.

    typescript
    test('should insert and retrieve JSON data', async () => { const jsonData = { key: 'value' }; await prisma.model.create({ data: { jsonField: jsonData } }); const result = await prisma.model.findFirst(); expect(result.jsonField).toEqual(jsonData); });
  5. 5

    Document the New Feature

    Update Prisma's documentation to include details about the new JSON field type support in SQLite. Provide examples and best practices for developers.

Validation

To confirm the fix worked, create a new SQLite database using Prisma, define a model with a JSON field, and perform CRUD operations on it. Ensure that the JSON data is stored and retrieved correctly without errors.

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1 low-confidence fix
Unverified Fix
New Fix – Awaiting Verification

Implement JSON Field Type Support in Prisma for SQLite

Medium Risk

Prisma currently lacks support for the JSON field type in SQLite, which is causing issues for developers wanting to migrate projects that utilize this feature. This limitation prevents the use of SQLite's JSON capabilities, which are essential for certain applications that require NoSQL-like functionality within a SQL database.

Awaiting Verification

Be the first to verify this fix

  1. 1

    Review SQLite JSON Extension Documentation

    Familiarize yourself with the SQLite JSON extension documentation to understand the capabilities and limitations of the JSON field type in SQLite.

  2. 2

    Analyze Sequelize's JSON Implementation

    Examine how Sequelize implements JSON field support for SQLite. This will provide insights into the necessary data types and methods that need to be integrated into Prisma.

  3. 3

    Modify Prisma Schema for JSON Support

    Update the Prisma schema to include a new data type for JSON fields specifically for SQLite. This should include defining the JSON type in the schema and ensuring it maps correctly to SQLite's JSON capabilities.

    typescript
    model Example {
  id Int @id @default(autoincrement())
  data Json
}
  4. 4

    Implement JSON Field Type Handling in Prisma Client

    Develop the necessary logic in the Prisma Client to handle reading and writing JSON data types. This includes serialization and deserialization of JSON objects to and from the database.

    typescript
    const example = await prisma.example.create({
  data: { key: 'value' }
});
  5. 5

    Test JSON Field Functionality

    Create unit tests to verify that the JSON field type works as expected in SQLite. Ensure that data can be inserted, queried, and updated without issues.

    typescript
    test('should store and retrieve JSON data', async () => {
  const example = await prisma.example.create({ data: { key: 'value' }});
  const retrieved = await prisma.example.findUnique({ where: { id: example.id }});
  expect(retrieved.data).toEqual({ key: 'value' });
});

Validation

Confirm that the JSON field type can be created, read, and updated in SQLite by running the unit tests and ensuring all pass successfully. Additionally, verify that the Prisma schema correctly reflects the JSON data type.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

prismaormpostgresqlkind/featuretopic:-sqlitetopic:-client-typestopic:-json