#30153: Export reusable where filter types

[StevenMcClankerton]

Linked issue

Closes #30153

At a glance

SQL builder:

import type { WhereFilter } from '@prisma/orm-postgres/builder/types';
import type { Contract } from '../src/prisma/contract';
import { db } from '../src/prisma/db';

const users = db.sql.public.user.select('id', 'email', 'createdAt');

function userById(id: string): WhereFilter<Contract, 'public', 'user'> {
  return (fields, operators) => operators.eq(fields.id, id);
}

users.where(userById('00000000-0000-0000-0000-000000000001'));

SQL ORM, with shorthand and predicate forms side by side:

import type { RelationPredicate, ShorthandWhereFilter } from '@prisma/orm-postgres/orm-client';
import { createOrmClient } from '../src/orm-client/client';
import type { Contract } from '../src/prisma/contract';

function userById(id: string): ShorthandWhereFilter<Contract, 'public', 'User'> {
  return { id };
}

function userByIdPredicate(id: string): RelationPredicate<Contract, 'public', 'User'> {
  return (user) => user.id.eq(id);
}

const db = createOrmClient(null as never);
const userId = '00000000-0000-0000-0000-000000000001';
db.User.where(userById(userId));
db.User.where(userByIdPredicate(userId));

These real integration-test examples show the new SQL builder annotation and the namespace-qualified ORM annotations in use. In both lanes, field mistakes are reported inside the helper body while the returned filter passes directly to .where().

Decision

This PR ships three connected pieces:

1. A public SQL builder WhereFilter<Contract, Namespace, Table> type exported from @prisma/orm-postgres/builder/types.
2. Namespace-precise SQL ORM standalone filters using the existing ShorthandWhereFilter<Contract, Namespace, Model> and RelationPredicate<Contract, Namespace, Model> names.
3. Compile-only integration coverage and RC upgrade instructions that prove and explain the public API through the PostgreSQL facade.

Summary

Extracting a SQL builder where() callback currently loses contextual typing unless users reconstruct internal signatures or cast the result. This change adds a supported public builder type for that pattern and makes the existing SQL ORM reusable filter types namespace-precise, keeping errors and autocomplete at the helper definition where they are actionable.

Reviewer notes

• The SQL ORM generic change is intentionally breaking: namespace is now required and appears before model. Existing annotations need the migration recorded in this PR.
• Relation predicates carry the target namespace from relation.to.namespace; emitted branded namespace IDs are normalized back to concrete contract namespace keys.
• Runtime query behavior and generated SQL are unchanged. The small find-user-by-id cleanup removes an unnecessary ID cast discovered while adding the public-facade integration type tests.

How it fits together

1. WhereFilter binds the existing expression callback to the selected table's DefaultScope and contract query context, then exports/types.ts exposes only that consumer-facing type.
2. types.ts makes the domain namespace a required coordinate for ORM shorthand filters, predicates, and relation filter accessors, so fields and operations resolve against one exact model facet.
3. collection.ts and model-accessor.ts carry that namespace through .where(), .first(), ordering, grouped collections, and nested relation accessors.
4. Public-facade type tests in the PostgreSQL demo exercise both authoring forms and pin negative diagnostics to nonexistent fields inside the helper bodies.
5. The app and extension upgrade transitions explain how to migrate existing ORM filter annotations.

Behavior changes & evidence

• SQL builder filters can be named, parameterized, and reused with table-specific fields and operators. The public surface is defined in table-proxy.ts and exports/types.ts, with package and facade evidence in where-filter.types.test-d.ts and sql-builder-filter.types.test-d.ts.
• SQL ORM shorthand and predicate helpers retain model-specific autocomplete and local diagnostics. Namespace-aware definitions live in types.ts and flow through collection.ts and model-accessor.ts; user-filter.types.test-d.ts proves both forms through @prisma/orm-postgres/orm-client.
• Namespace collisions resolve to the correct model facet. orm-namespace-unique-fields.types.test-d.ts proves that public.User and auth.User expose different fields and that missing or unknown namespace coordinates fail at compile time.
• Existing ORM filter annotations receive an explicit migration path. The app and extension transitions in 8.0.0-rc.8-to-8.0.0-rc.9 and its extension counterpart describe adding and reordering the namespace coordinate.

Testing performed

• pnpm --filter @internal/sql-builder test — 13 test files, 171 tests passed.
• pnpm --filter @internal/sql-orm-client test — 70 test files, 772 tests passed, no type errors.
• pnpm --filter prisma-8-demo test — 14 test files, 73 tests passed, including all 26 repository integration cases.
• pnpm --filter @internal/sql-builder typecheck
• pnpm --filter @internal/sql-orm-client typecheck
• pnpm --filter prisma-8-demo typecheck
• pnpm lint:deps
• pnpm lint:skills
• pnpm check:upgrade-coverage
• git diff --check

Skill update

The public ORM type signature change is recorded for both application and extension consumers in the 8.0.0-rc.8 → 8.0.0-rc.9 upgrade instructions. pnpm lint:skills and pnpm check:upgrade-coverage pass.

Alternatives considered

• Export the builder machinery directly. Exposing Scope, QueryContext, ExpressionBuilder, and FieldProxy would let consumers reconstruct the callback type, but would make internal query representation part of the supported API. WhereFilter supplies the useful contract coordinate without that leakage.
• Add PredicateFor and a union-shaped WhereInput. WhereFilter matches the method it targets, while the existing ShorthandWhereFilter and RelationPredicate names keep the ORM's object and callback authoring forms explicit instead of hiding them behind one broad union.
• Keep namespace optional or after model. Optional namespace lookup becomes imprecise when model names collide. Requiring <Contract, Namespace, Model> matches the contract coordinate order and guarantees useful autocomplete.
• Document Parameters<...> or casts as the workaround. Those approaches duplicate complexity at every helper and can move diagnostics to the eventual .where() call. A first-class exported type keeps the error at its source.

Checklist

• All commits are signed off (git commit -s) per the DCO.
• I read CONTRIBUTING.md and the change is scoped to one logical concern.
• Tests are updated.
• The PR title uses the linked GitHub issue prefix because this issue has no Linear ticket.
• The Skill update section above is filled in.

Notes for the reviewer

The main compatibility consideration is the intentionally required ORM namespace coordinate; matching app and extension upgrade instructions ship in this PR.

Summary by CodeRabbit

• New Features

  • SQL ORM filter and relation types now support namespace-qualified model references.
  • Added reusable, publicly available filter type support for SQL builder workflows.
  • Namespace-aware typing improves autocomplete and validation across filtering, sorting, and relation queries.

• Bug Fixes

  • Invalid fields and unknown namespaces are now rejected more reliably during TypeScript checks.

• Documentation

  • Added upgrade guidance for updating reusable ORM filter type parameters.

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• examples/prisma-8-demo/test/sql-builder-filter.types.test-d.ts
• examples/prisma-8-demo/test/user-filter.types.test-d.ts

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• examples/prisma-8-demo/test/sql-builder-filter.types.test-d.ts

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---

📝 Walkthrough

Walkthrough

The SQL builder adds an exported, namespace-scoped WhereFilter. ORM filter and relation types now require namespace coordinates. Collections propagate namespace types through accessors. Type tests, examples, and upgrade instructions cover the new generic ordering.

Changes

Reusable SQL and ORM filters

Layer / File(s)	Summary
SQL builder filter contract packages/2-sql/4-lanes/sql-builder/src/types/*, packages/2-sql/4-lanes/sql-builder/src/exports/*, packages/2-sql/4-lanes/sql-builder/test/types/*	Adds the namespace- and table-scoped WhereFilter type, exports it from the SQL builder, and validates field typing with type tests.
ORM namespace type propagation packages/3-extensions/sql-orm-client/src/types.ts, packages/3-extensions/sql-orm-client/src/model-accessor.ts, packages/3-extensions/sql-orm-client/src/collection*.ts, packages/3-extensions/sql-orm-client/src/filters.ts	Threads NsId through field operations, model accessors, relation predicates, shorthand filters, collections, grouped collections, and filter expression conversion.
Filter usage and migration validation examples/prisma-8-demo/test/*, examples/prisma-8-demo/src/*, packages/3-extensions/sql-orm-client/test/*, skills/prisma-8/upgrading/*	Adds reusable-filter examples and type checks, updates existing namespace-qualified usages, and documents the generic argument migration.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: ⚪ Minimal · up to 59216

This change updates reusable TypeScript filter types without changing runtime query behavior, and no actionable merge-blocking risk remains after normal checks and review.

Suggested reviewers: aqrln, sevinf, tensordreams, wmadden, wmadden-electric

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR adds reusable SQL builder and ORM filter types, namespace-aware typing, tests, and migration guidance. However, it does not implement several explicit requirements in issue [#30153], including …	Implement or explicitly revise the requirements for [#30153]. Add the requested public exports and aliases, documentation, and coverage for standalone predicates across the listed query operations and variant collections. Confirm whether `W…
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 15 functions across 16 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the primary change: exporting reusable where-filter types.
Out of Scope Changes check	✅ Passed	The changes remain related to reusable where-filter typing, namespace propagation, type-level tests, integration examples, and upgrade guidance. No unrelated runtime behavior, generated SQL, or contra…

Full details: Linked Issues check

Explanation

The PR adds reusable SQL builder and ORM filter types, namespace-aware typing, tests, and migration guidance. However, it does not implement several explicit requirements in issue [#30153], including the PredicateFor alias, ExpressionBuilder and FieldProxy exports, ORM WhereInput and VariantAwareModelAccessor exports, reusable-predicate query documentation, and the specified query-operation assignability tests.

Resolution

Implement or explicitly revise the requirements for [#30153]. Add the requested public exports and aliases, documentation, and coverage for standalone predicates across the listed query operations and variant collections. Confirm whether WhereFilter intentionally replaces PredicateFor. Provide package rebuilds if required by the final public API changes.

Full details: Out of Scope Changes check

Explanation

The changes remain related to reusable where-filter typing, namespace propagation, type-level tests, integration examples, and upgrade guidance. No unrelated runtime behavior, generated SQL, or contract-format changes are reported.

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commit: 592166b

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size-limit report 📦

Path	Size
postgres / no-emit	174.89 KB (0%)
postgres / emit	152.03 KB (0%)
mongo / no-emit	101.09 KB (0%)
mongo / emit	90.95 KB (0%)
cf-worker / no-emit	198.77 KB (0%)
cf-worker / emit	173.31 KB (0%)

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Inline comments:
In `@examples/prisma-8-demo/test/sql-builder-filter.types.test-d.ts`:
- Line 3: Remove the .d extension from both TypeScript contract imports: update
the import in examples/prisma-8-demo/test/sql-builder-filter.types.test-d.ts to
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📒 Files selected for processing (19)

• examples/prisma-8-demo/src/orm-client/find-user-by-id.ts
• examples/prisma-8-demo/test/sql-builder-filter.types.test-d.ts
• examples/prisma-8-demo/test/user-filter.types.test-d.ts
• packages/2-sql/4-lanes/sql-builder/README.md
• packages/2-sql/4-lanes/sql-builder/src/exports/types.ts
• packages/2-sql/4-lanes/sql-builder/src/index.ts
• packages/2-sql/4-lanes/sql-builder/src/types/db.ts
• packages/2-sql/4-lanes/sql-builder/src/types/table-proxy.ts
• packages/2-sql/4-lanes/sql-builder/test/types/where-filter.types.test-d.ts
• packages/3-extensions/sql-orm-client/src/collection-internal-types.ts
• packages/3-extensions/sql-orm-client/src/collection.ts
• packages/3-extensions/sql-orm-client/src/filters.ts
• packages/3-extensions/sql-orm-client/src/grouped-collection.ts
• packages/3-extensions/sql-orm-client/src/model-accessor.ts
• packages/3-extensions/sql-orm-client/src/types.ts
• packages/3-extensions/sql-orm-client/test/codec-async.types.test-d.ts
• packages/3-extensions/sql-orm-client/test/orm-namespace-unique-fields.types.test-d.ts
• skills/prisma-8/upgrading/app/upgrades/8.0.0-rc.8-to-8.0.0-rc.9/instructions.md
• skills/prisma-8/upgrading/extension/upgrades/8.0.0-rc.8-to-8.0.0-rc.9/instructions.md

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