fix(target-postgres): avoid uncast array_position for pg.enum ORDER BY - #30191
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Included review availability: Your plan provides up to 10 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe Postgres SQL renderer now leaves native enum columns as plain ChangesNative enum ordering
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The renderer now avoids the invalid native-enum ORDER BY expression while preserving declaration-order behavior for text-backed value sets. No actionable merge-blocking risk remains at the current head. Suggested reviewers: 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation The renderer now skips the array_position rewrite for native PostgreSQL enums in both column-ref and identifier-ref paths. The integration fixture and tests cover declaration-order sorting, reverse sorting, tie-breaking, and distinctOn behavior. Text-backed value-set ordering remains covered by the existing rewrite. Full details: Out of Scope Changes checkExplanation The pull request also adds new MongoDB and PostgreSQL test harnesses and changes import paths across many unrelated integration tests. These changes are not directly required by issue Resolution Move the new test harnesses and broad import-path changes into a separate pull request, or document and demonstrate why they are required for this fix. Keep this pull request limited to the native-enum renderer change and its focused integration coverage. Full details: Docstring CoverageExplanation Docstring coverage is 20.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 15 functions across 53 files. (106 skipped: 1 unsupported, 105 over the file limit.)
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Inline comments:
In
`@test/integration/test/ports/prisma/functional/issues-30163-enum-order-by/_fixture/contract.prisma`:
- Line 8: Update the Ticket.status field in the Prisma regression fixture to use
a nullable PostgreSQL enum with ?. Extend the fixture data with a row whose
status is null and add its expected position to the ordering assertions.
In
`@test/integration/test/ports/prisma/functional/issues-30163-enum-order-by/issues-30163-enum-order-by.test.ts`:
- Around line 24-29: Add explicit test cases in the issues-30163 enum order-by
suite for ordering by an unqualified identifier reference and for DISTINCT ON,
alongside the existing ticket.status orderBy coverage. Reuse the established
Ticket query and assertions, ensuring both renderer paths verify the expected
enum ordering and regression behavior.
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In `@test/integration/test/enum-order-by/enum-order-by.test.ts`:
- Line 4: Update the enum-order-by test’s contract setup to import the precise
Contract type from contract.d.ts and validate the generated contractJson with
validateContract<Contract>(contractJson) before passing it to withPostgresPort.
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…ay_position in ORDER BY `ORDER BY`/`DISTINCT ON` on a `pg.enum(...)` column rewrote to `array_position(ARRAY[...]::text[], <col>)` with no cast on the column argument, so Postgres rejected it with 42883 (no `array_position(text[], <enum>)` overload) — ordering by any native-enum column failed at runtime. Gate the rewrite on the column's codec (`pg/enum@1`) rather than on the mere presence of a value-set: a native enum already sorts by declaration order under a plain column reference (Postgres orders by `pg_enum.enumsortorder`), so it now falls through to plain-column rendering instead. Text-backed value-sets (CHECK-constraint enums) are unaffected and keep the `array_position` rewrite. Fixes #30163 Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UcqoY3CKfnubdZt5YQk2Rq Signed-off-by: Steven McClankerton <tatarintsev@prisma.io>
Removes the explanatory comments added in the previous commit and replaces the hand-built AST/migration integration test with an ORM-level port test that seeds rows and orders by the enum column through the public facade. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UcqoY3CKfnubdZt5YQk2Rq Signed-off-by: Steven McClankerton <tatarintsev@prisma.io>
The suite is not a port of an upstream Prisma test, so it moves to its own directory. Adds a distinctOn case, which reaches the same rendering path through the public API. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UcqoY3CKfnubdZt5YQk2Rq Signed-off-by: Steven McClankerton <tatarintsev@prisma.io>
The harnesses are generic, and two suites outside ports already reached into that directory for them. They move to test/_harness and every importer is repointed. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UcqoY3CKfnubdZt5YQk2Rq Signed-off-by: Steven McClankerton <tatarintsev@prisma.io>
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Summary
ORDER BYon a column typedpg.enum(...)rendered asarray_position(ARRAY[...]::text[], "col")with no cast on the column argument. Against a native Postgres enum column that is rejected outright:So ordering by any enum-restricted column failed at runtime on rc.8.
db.sqlfailed identically — it is the SQL renderer, not the ORM surface, so dropping to the SQL builder was not a workaround.Fixes #30163
The fix
Gate the
array_positiondeclaration-order rewrite off for native enums, rather than casting the column argument totext.A native Postgres enum already sorts by declaration order under a plain
ORDER BY— Postgres orders enum values bypg_enum.enumsortorder— so the rewrite is redundant there. It exists for value-sets backed bytext/varcharcolumns with a CHECK constraint, which would otherwise sort alphabetically. Those are unaffected: they carrypg/text@1, the gate is inert for them, and the existing declaration-order suite passes 7/7 unchanged.The alternative was casting the column inside
array_position. That also works — it preserves declaration order, it does not sort alphabetically — but it keeps a per-row function call that defeats a plain index on the column, and it leaves the renderer unable to distinguish "needs sort-order emulation" from "the database already sorts this correctly". Gating also agrees withrenderWhere, which renders comparisons on the raw column, so a keyset/cursor predicate already compares by enum ordering wherearray_positiondid not.Why it is safe
Contract declaration order and
pg_enum.enumsortorderare kept identical by the migration planner: it can only append a value (ALTER TYPE … ADD VALUE, noBEFORE/AFTER) and refuses any other member change — rename, removal, or reorder — vianativeEnumMemberChangeRefusal. If that refusal is ever relaxed to permit reordering, this gate has to be revisited.The gate keys on
codecId, notnativeType. A hand-authored contract carrying apg/text@1codec over a column whose adopted physical type happens to be a native enum would not be caught — reachable only by hand-adopting an existing enum type as text, not by anythingpg.enum(...)authoring produces.Interaction with #30099
#30099 ("enum ORDER BY / DISTINCT ON loses declaration order behind a derived table") touches the same function. This PR should land first — it is ~10 lines against a hard runtime error on a published release, while #30099 is larger and still in review.
#30099 deletes
TableSourceCoordinate/collectTableSourcesand both resolver functions here, replacing them withresolveColumnValueSetFromSource(source, column, contract)returning{ found, values }. On rebase, drop both call sites ofsortsByDeclarationOrderNativelyand call it once instead, in that PR'stable-sourcebranch, immediately afterstorageColumnis resolved:found: true, notfalse— the column exists, it is simply not rewritten, and the identifier resolver's ambiguity counter depends on that distinction. That single site also covers #30099's new derived-table recursion, which this PR's two call sites do not reach. Re-inserting the gate at the two old call sites instead would pass the tests here but leave a native-enum column behind adistinct()/groupBy()wrap as a new, untested 42883.Testing
test/integration/test/ports/prisma/functional/issues-30163-enum-order-by— an ORM-level port test. The harness pushes the contract through the plan → apply path (no hand-written DDL), then seeds rows and queries through the public facade:Declaration order is
open, closed, so alphabetical ordering is distinguishable from a correct sort. Ascending and descending are both asserted on the whole result shape. Against the renderer onmainboth cases fail with42883; with the fix both pass.The existing text-backed value-set suite (
order-by-enum.integration.test.ts) passes 7/7 unchanged, and the postgres adapter suite is green at 866 passed / 3 expected-fail.Release note
docs/releases/v8.0.0-rc.9.mddoes not exist yet; the entry follows once it does, matching the precedent set by #30099 for rc.5.🤖 Generated with Claude Code
https://claude.ai/code/session_01UcqoY3CKfnubdZt5YQk2Rq
Summary by CodeRabbit
distinctOnbehavior to return one record for each enum value.