feat: select distinct

[ymc9]

Summary by CodeRabbit

• New Features
  • Added support for specifying distinct fields in find queries, allowing users to retrieve unique records based on one or more fields.
• Bug Fixes
  • None.
• Tests
  • Added tests to verify correct behavior when using the distinct option in find queries.
• Documentation
  • Updated checklist to reflect completion of the distinct feature in the ORM section.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Support for the distinct argument in find queries was added to the ORM. This includes type-level, schema, and runtime handling, dialect capability detection, and in-memory fallback for dialects lacking native support. Tests were added to verify the new feature. Some method visibilities were also updated for encapsulation.

Changes

File(s)	Change Summary
TODO.md	Updated checklist: marked "Distinct" as complete and "Prisma client extension" as incomplete.
.../crud-types.ts, .../schema.ts	Added Distinct type, updated FindArgs to support distinct, refined GetFields type alias.
.../crud/dialects/base.ts, .../dialects/postgresql.ts, .../dialects/sqlite.ts	Made supportsUpdateWithLimit abstract; added abstract supportsDistinctOn getter, implemented in dialects.
.../crud/operations/base.ts	Added handling for the distinct argument in the read method, with dialect support and in-memory fallback.
.../crud/validator.ts	Added distinct field to query validation; made several schema methods private; added private makeDistinctSchema.
.../query-utils.ts	Added ensureArray utility function.
.../crud/operations/create.ts	Type assertion update for getIdValues result.
.../test/client-api/find.test.ts	Added tests for findMany with distinct on single and multiple fields.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant ORM
    participant Dialect
    participant DB

    Client->>ORM: findMany({ distinct: ... })
    ORM->>Dialect: Check supportsDistinctOn
    alt Dialect supports DISTINCT ON
        ORM->>DB: Query with DISTINCT ON fields
        DB-->>ORM: Results
    else Dialect does not support DISTINCT ON
        ORM->>DB: Query without DISTINCT
        DB-->>ORM: Results
        ORM->>ORM: In-memory distinct filtering
    end
    ORM-->>Client: Distinct results

Loading

Poem

In fields of data, rabbits leap,
Distinct and nimble, never sheep.
Now queries hop, unique and bright,
Through dialects, day and night.
With tests and types, we bound ahead,
Distinctly clever—enough said!
🐇✨

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📜 Recent review details

Configuration used: CodeRabbit UI
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📥 Commits

Reviewing files that changed from the base of the PR and between 7ecbe4c and 934ff69.

📒 Files selected for processing (11)

• TODO.md (2 hunks)
• packages/runtime/src/client/crud-types.ts (2 hunks)
• packages/runtime/src/client/crud/dialects/base.ts (1 hunks)
• packages/runtime/src/client/crud/dialects/postgresql.ts (1 hunks)
• packages/runtime/src/client/crud/dialects/sqlite.ts (1 hunks)
• packages/runtime/src/client/crud/operations/base.ts (3 hunks)
• packages/runtime/src/client/crud/operations/create.ts (1 hunks)
• packages/runtime/src/client/crud/validator.ts (8 hunks)
• packages/runtime/src/client/query-utils.ts (1 hunks)
• packages/runtime/src/schema/schema.ts (1 hunks)
• packages/runtime/test/client-api/find.test.ts (1 hunks)

✨ Finishing Touches

• 📝 Generate Docstrings

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