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fix(sql-orm-client): correlate includes on every key column - #30107

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thribhuvan003:fix/include-composite-foreign-key
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fix(sql-orm-client): correlate includes on every key column#30107
thribhuvan003 wants to merge 1 commit into
prisma:mainfrom
thribhuvan003:fix/include-composite-foreign-key

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@thribhuvan003

@thribhuvan003 thribhuvan003 commented Aug 23, 2026

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Linked issue

Fixes #30104.

Summary

.include() across a composite foreign key correlated the child subquery on the first key column only, so a parent matched every child sharing that column — and for an N:1 relation the result was then unwrapped to the first of them, giving every parent the same related row. Nothing throws and the row shape stays valid, so it surfaces as quietly wrong data rather than an error. The relation-filter path (.some() / .every() / .none()) already correlates on the full key through buildJoinWhere; this brings .include() in line with it.

Testing performed

  • pnpm typecheck in packages/3-extensions/sql-orm-client — clean.
  • pnpm test in the same package — 773 passed across 70 files, no type errors (771 before, plus the two new cases).
  • npx vitest run test/sql-orm-client/ in test/integration — 290 passed / 1 failed, identical to the same run on a clean main; that one failure is a pre-existing SQLite sumBigInt type test unrelated to includes.
  • npx vitest run test/sql-orm-client/include.test.ts test/sql-orm-client/mn-include.test.ts — 22 passed.
  • Counterfactual: with only the loop bounds reverted to the old first-column-only behaviour, both new tests fail and the other 70 still pass, so they do pin this regression.

New tests:

  • collection-contract.test.tsresolveIncludeRelation() returns both column pairs for a composite key.
  • query-plan-select.test.ts — the emitted child-subquery predicate is an AND of both equalities.

Skill update

n/a — internal only. No CLI, public TypeScript API, prisma.config.ts, error-code or glossary surface changes.

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 is in conventional-commit form, per CONTRIBUTING.md and the contrib-pr skill (no Linear ticket, as an external contributor).

Notes for the reviewer

  • resolveIncludeRelation keeps its existing "incomplete join metadata" error; it is now raised when no column pair resolves at all, rather than when index 0 is missing.
  • The through (m-n) branch is deliberately untouched — it already mapped every local field.
  • Both include join sites carried identical code, so they now share one buildIncludeJoinExpr helper instead of duplicating the loop. Happy to inline it back if you would rather keep the two sites independent.
  • I could not run pnpm test:integration end to end here: its pretest build fails on @prisma/orm-framework with an "aggregate entrypoints lost exports to star-export ambiguity" error, and it fails the same way on a clean main on this machine, so it looks unrelated to this change. I ran the integration tests directly through vitest instead, as listed above. Worth a second run in CI.

Summary by CodeRabbit

  • New Features

    • Added support for relations using composite keys with multiple column pairs.
    • Include queries now match every related column for row and scalar results.
    • Relation metadata now exposes ordered local and target column lists.
  • Bug Fixes

    • Incomplete or invalid relation mappings no longer produce incorrect include results.
  • Tests

    • Added coverage for composite-key relations and multi-column include matching.

@thribhuvan003
thribhuvan003 requested a review from a team as a code owner August 23, 2026 11:10
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📒 Files selected for processing (10)
  • packages/3-extensions/sql-orm-client/src/collection-contract.ts
  • packages/3-extensions/sql-orm-client/src/collection.ts
  • packages/3-extensions/sql-orm-client/src/query-plan-select.ts
  • packages/3-extensions/sql-orm-client/src/types.ts
  • packages/3-extensions/sql-orm-client/test/collection-contract.test.ts
  • packages/3-extensions/sql-orm-client/test/collection-dispatch.test.ts
  • packages/3-extensions/sql-orm-client/test/collection.state.test.ts
  • packages/3-extensions/sql-orm-client/test/query-plan-select.test.ts
  • packages/3-extensions/sql-orm-client/test/variant-include.collection-contract.test.ts
  • packages/3-extensions/sql-orm-client/test/variant-include.query-plan-fixtures.ts
🚧 Files skipped from review as they are similar to previous changes (10)
  • packages/3-extensions/sql-orm-client/test/variant-include.query-plan-fixtures.ts
  • packages/3-extensions/sql-orm-client/src/types.ts
  • packages/3-extensions/sql-orm-client/test/collection.state.test.ts
  • packages/3-extensions/sql-orm-client/test/variant-include.collection-contract.test.ts
  • packages/3-extensions/sql-orm-client/test/collection-dispatch.test.ts
  • packages/3-extensions/sql-orm-client/test/query-plan-select.test.ts
  • packages/3-extensions/sql-orm-client/test/collection-contract.test.ts
  • packages/3-extensions/sql-orm-client/src/query-plan-select.ts
  • packages/3-extensions/sql-orm-client/src/collection-contract.ts
  • packages/3-extensions/sql-orm-client/src/collection.ts

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📝 Walkthrough

Walkthrough

The SQL ORM client now resolves include relations as paired column arrays and correlates composite foreign keys with all column pairs. Tests cover relation resolution, metadata propagation, row includes, scalar includes, and variant relations.

Changes

Composite include support

Layer / File(s) Summary
Relation contract and resolution
packages/3-extensions/sql-orm-client/src/types.ts, packages/3-extensions/sql-orm-client/src/collection-contract.ts, packages/3-extensions/sql-orm-client/src/collection.ts
IncludeExpr and ResolvedIncludeRelation now use positional targetColumns and localColumns arrays. resolveIncludeRelation collects valid column pairs.
Composite query correlation
packages/3-extensions/sql-orm-client/src/query-plan-select.ts
Row and scalar include queries now correlate every target/local column pair with AND expressions. Incomplete or empty correlations raise errors.
Composite include validation
packages/3-extensions/sql-orm-client/test/*
Tests update include metadata and fixtures for array-valued columns. New coverage verifies ordered composite relation resolution, invalid key lengths, empty pairs, and generated query predicates.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 1cea8

Composite foreign-key includes now correlate all resolved column pairs, preventing unrelated child rows while retaining single-key and through-relation behavior. No current merge-blocking risk remains.

Sequence Diagram(s)

sequenceDiagram
  participant IncludeRelation as resolveIncludeRelation
  participant QueryPlan as query-plan-select
  participant Database as SQL database
  IncludeRelation->>QueryPlan: pass localColumns and targetColumns
  QueryPlan->>QueryPlan: create equality for each column pair
  QueryPlan->>Database: execute correlated include subquery
  Database-->>QueryPlan: return matched related rows
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🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 22.22% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 9 functions across 10 files. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly summarizes the primary change: include queries now correlate on every key column for composite relations.
Linked Issues check ✅ Passed The changes satisfy issue #30104. Include relation metadata now preserves all local and target columns, both include join paths generate composite-key predicates, single-column behavior remains suppor…
Out of Scope Changes check ✅ Passed The source and test changes are limited to composite-key include relation resolution and correlation. No unrelated code changes are identified.
Full details: Linked Issues check

Explanation

The changes satisfy issue #30104. Include relation metadata now preserves all local and target columns, both include join paths generate composite-key predicates, single-column behavior remains supported, incomplete metadata remains rejected, and the many-to-many through path is unchanged. Tests cover composite-key ordering, mismatched or incomplete pairs, and multi-column correlation.

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Actionable comments posted: 1

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Inline comments:
In `@packages/3-extensions/sql-orm-client/src/collection-contract.ts`:
- Around line 345-357: Reject incomplete composite-key metadata in
collection-contract.ts lines 345-357 by requiring equal localFields and
targetFields lengths and a valid field at every position, throwing the existing
incomplete-metadata error instead of truncating pairs. In query-plan-select.ts
lines 280-289, require equal parentLocalRefs and targetColumns lengths before
constructing predicates so manually built IncludeExpr values are not truncated.
Add tests covering unequal lengths and an empty later pair.
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📒 Files selected for processing (10)
  • packages/3-extensions/sql-orm-client/src/collection-contract.ts
  • packages/3-extensions/sql-orm-client/src/collection.ts
  • packages/3-extensions/sql-orm-client/src/query-plan-select.ts
  • packages/3-extensions/sql-orm-client/src/types.ts
  • packages/3-extensions/sql-orm-client/test/collection-contract.test.ts
  • packages/3-extensions/sql-orm-client/test/collection-dispatch.test.ts
  • packages/3-extensions/sql-orm-client/test/collection.state.test.ts
  • packages/3-extensions/sql-orm-client/test/query-plan-select.test.ts
  • packages/3-extensions/sql-orm-client/test/variant-include.collection-contract.test.ts
  • packages/3-extensions/sql-orm-client/test/variant-include.query-plan-fixtures.ts

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Comment thread packages/3-extensions/sql-orm-client/src/collection-contract.ts Outdated
@Arbitriom

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any update on it ?

resolveIncludeRelation kept only localFields[0] and targetFields[0], so an
include across a composite foreign key emitted a predicate correlating on the
first column alone. The child subquery then matched every row sharing that
first column, and for an N:1 relation the result was unwrapped to the first of
them, so every parent silently received the same related row. Nothing threw
and the row shape stayed valid, which makes it hard to notice.

Resolve every column pair and AND the equalities, mirroring buildJoinWhere in
model-accessor.ts that the relation-filter path already uses for the same
relations. Reject incomplete composite-key metadata when column array lengths
mismatch or elements are missing.

Single-column foreign keys are unaffected.

Signed-off-by: thribhuvan003 <thribhuvan003@gmail.com>
@thribhuvan003
thribhuvan003 force-pushed the fix/include-composite-foreign-key branch from 889bb55 to 1cea85b Compare September 3, 2026 16:43
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@thribhuvan003

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all checks and tests pass locally and the branch is up to date with main, just waiting on maintainers for review and to approve the ci workflows.

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[v8] .include() joins only the first column of a composite foreign key, silently returning wrong rows

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