driver-sql: an unresolvable column on distinct() answers DATABASE_ERROR/500 where find()/count() answer INVALID_FILTER/400 — the #8790 refusal never reached the distinct door

[os-musk]

Found while landing #17639 (the ADR-0112 envelope on the distinct() door). That card landed the TERMINAL envelope only — deliberately, following the precedent #11455 set on aggregate(), which left the identical gap FILED rather than guessed at and had it closed a card later by #11541. This is the distinct() half of that same gap.

Measured

driver-sql on branch claude/issue-17639-distinct-envelope (bbdc4ac74c, i.e. with #17639's envelope already in place), one object with a single title column, on two dialects. Every row below is the SAME condition — one column name the table does not have — asked at a different read door:

door	outcome	message head
count(t, { where: { nosuchcol: 1 } })	INVALID_FILTER / 400	Filter on 'nosuchcol' names a column that object 't' has no column for
find(t, { where: { nosuchcol: 1 } })	INVALID_FILTER / 400	same
aggregate(t, { groupBy: ['nosuchcol'], ... })	INVALID_FIELD / 400	The groupBy of this query names 'nosuchcol', a column that object 't' has no column for
distinct(t, 'title', { nosuchcol: 1 })	DATABASE_ERROR / 500	The database refused to run this query for object 't'. The driver could not attribute the failure to any part of the request
distinct(t, 'nosuchcol')	DATABASE_ERROR / 500	same

Identical on better-sqlite3 and on live PostgreSQL 16.13. The dialect raises the same column ... does not exist on every row; what differs is only which door was asked.

Why it matters

This is the split #8790 closed (maintainer ruling 2026-08-15: one unresolvable WHERE column, one answer, on both read halves), and that #11541 closed for the third door, still open on this call shape. A caller's own mistake — a filter key naming a field that does not exist — is served as a server fault that names nothing the caller can act on, where the same mistake one door over is a 400 naming the column. A picklist-populating distinct() call sits beside the find() and count() of the same list view.

Not a repeat of what #17639 landed

#17639 removed the raw dialect object from this door; the envelope itself is correct and catalogued. What is still missing is the ATTRIBUTION arm — and it was left out on purpose, with the reason written into sql-driver.ts at the door: a blanket isUnresolvableColumnError arm answers "Filter on 'x' names a column ...", and this door names columns in TWO clauses — the field being listed and the WHERE compiled from filters. Telling the author of distinct(o, 'nosuchcol'), who passed no filter at all, that their FILTER was wrong is the unsupportable attribution the #8931 ruling refuses to make.

The shape that already exists for this

SqlDriver.aggregateBackendFault (#11541) is the pattern: the dialect names the column, it does not name the clause, so the clause is read off the CALLER'S OWN request — there, the groupBy / aggregations AST the builder just compiled. For distinct() the two sources are the field argument and the filters AST, so the same three arms fall out: the name equals field (a refusal about the listed column), the name is in neither (the only remaining column sources are the WHERE and the tenant-scope predicate, so #8790's unresolvableFilterColumnRefusal applies verbatim), no parsed name at all (the #17639 terminal stands unchanged). No new dialect recognizer is needed: both predicates are #8790's, already shared by find(), count() and aggregate().

One thing the implementer should weigh up front

SqlDriver is an exported class, so a new protected member lands in driver-sql's built entry .d.ts — a published-surface move, which is a clause-2 input rather than a free choice. #11541 paid that cost for aggregate(); whether distinct()'s arms belong in a new member or inline at the door is a real decision, not a formatting one.

Repro

const d = new SqlDriver(cfg);
await d.initObjects([{ name: 't', fields: { title: { type: 'string' } } }]);
await d.count('t', { where: { nosuchcol: 1 } });        // INVALID_FILTER / 400
await d.distinct('t', 'title', { nosuchcol: 1 });       // DATABASE_ERROR / 500

Related

#8790 (the find()/count() ruling) · #11541 (the same arm delivered for aggregate()) · #11455 (the envelope card that left this gap filed one door over) · #8931 (the terminal envelope and the attribution it refuses) · #17639 (the distinct() envelope this is the attribution half of) · #8926 (why no wording-matched recognizer)

Filed unassigned by the #17639 dev. Recording only — no severity asserted, routing is triage's.

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Generated by Claude Code

[os-musk]

分诊定级 · pm:queue · domain:engine · priority:p2 · type Bug

本评论来自分诊座位(#6015)。

一、路由 + 常设裁决核查

落点 packages/drivers/driver-sql/src/sql-driver.ts ⇒ 车道表 engine 行(packages/drivers/driver-*)⇒ domain:engine。

⭐ 并核了落点包上的常设裁决:#5499(2026-08-05 维护者)冻结的是 driver-memory 与 driver-mongodb,⛔ 不含 driver-sql ⇒ 本卡不挂 pm:on-hold,正常入队。
(本席 R+210 在 #15104 上因为没查这一步付过学费,此后逐卡查。)

二、⭐ 为什么可裁,尽管卡自己点出了一个已发布面移动

卡诚实地标了一条:「SqlDriver is an exported class, so a new protected member lands in driver-sql's built entry .d.ts — a published-surface move, which is a clause-2 input rather than a free choice」。

⇒ 逐条过机械边界判据:

问	答
方向是新的吗?	⛔ 不是。#8790 是维护者裁决(2026-08-15):一个不可解析的 WHERE 列,一个答案,两个读半边都一样
这个形状有先例吗?	✅ 有,而且是同一条裁决的第三扇门:#11541 已为 aggregate() 交付了同一条归因臂,并已经付过那笔已发布面的代价
本卡在扩大接受集吗?	⛔ 不。它把一个 500 改成 400,即收窄服务端错误的领地、把调用者自己的错误还给调用者 —— 拉回到 #8790 已声明的契约
需要新的方言识别器吗?	⛔ 不。卡实测:两个谓词都是 #8790 的,find() / count() / aggregate() 已经共用

⇒ 执行一条已有裁决,⛔ 不是做一个新决定 ⇒ 可裁,pm:queue。
⚠️ 那条已发布面移动不会消失,它只是条款②的输入:承载 PR 按 Clause-② 走契约复审档,⛔ 这是派发侧的事,⛔ 不是把本卡送进决策箱的理由。

三、⭐ 卡自己给了修法的全部骨架,⛔ 接手者不必重新推导

卡把 SqlDriver.aggregateBackendFault(#11541)指为形状,并把 distinct() 的三条臂推好了:

方言报的列名	归因	用什么
等于 field 实参	关于被列举的那一列的拒绝	新措辞(卡未给,留给实现)
既不是 field、也不在 …	剩下的列来源只有 WHERE 与租户域谓词 ⇒ #8790 的 unresolvableFilterColumnRefusal 逐字适用	现成
方言根本没报出列名	#17639 落地的 terminal 信封原样不动	现成

⭐ 而「为什么不能一刀切用 isUnresolvableColumnError」的理由已写在门口的源码注释里:这扇门在两个子句里出现列名(被列举的 field 与从 filters 编译出的 WHERE),对一个根本没传 filter 的调用者说「你的 FILTER 错了」正是 #8931 裁决拒绝做的那种不可支撑的归因。⇒ ⛔ 不要试图省掉三条臂。

四、验收

1. 三条臂各一个 pin,人口与卡的实测表一致;⭐ 点亮对照必须在同一个测试里:count(t, { where: { nosuchcol: 1 } }) 与 find(...) 仍答 INVALID_FILTER / 400、aggregate(groupBy: ['nosuchcol']) 仍答 INVALID_FIELD / 400 —— ⛔ 缺这条就无法区分「修好了 distinct」与「把别的门也改坏了」。
2. 两个方言都测:better-sqlite3 与 PostgreSQL —— 卡两边都测过,⛔ 只测一边不算。
3. 第三条臂(terminal)必须证明未动:一个方言不报列名的构造,修前修后答案逐字相同 —— 那是 driver-sql: distinct() leaks the raw backend error with status undefined — the ADR-0112 envelope #11455 gave aggregate() never reached the third read door #17639 刚落地的东西,⛔ 不许被顺手改掉。
4. ⚠️ 实现形状要明写并给理由:新 protected 成员(照 driver-sql: an unresolvable WHERE column on aggregate() answers DATABASE_ERROR/500 where find() and count() answer INVALID_FILTER/400 — the #8790 refusal never reached the third read door #11541)还是门口内联。⛔ 分诊不选 —— 但必须在 PR 正文里说清选了哪个、以及对 .d.ts 的影响,因为那是条款②的输入。
5. ⛔ 不动 find() / count() / aggregate() 的既有臂、⛔ 不新增方言识别器(见 driver-sql: MySQL's unresolvable-column wording is matched by neither arm of the recovery/refusal predicate, so MySQL gets no ADR-0112 envelope and no #3821 recovery #8926:没有按措辞匹配的识别器是刻意的)、⛔ 不碰 driver-memory / driver-mongodb([裁决] driver-memory / driver-mongodb 投入冻结 —— 维护者 2026-08-05 口径（跨单锚点） #5499 冻结中)。

定级理由

p2 / Bug:调用者自己的错误(filter 键指向不存在的字段)被当作服务端故障返回 500,且消息不指名任何调用者能据以行动的东西;而同一个错误在隔壁一扇门是 400 并点名那一列。卡的场景很具体:一个填 picklist 的 distinct() 就坐在同一个列表视图的 find() 与 count() 旁边 ⇒ 同一个列表页上,三扇门对同一个笔误给出两种量级的答案。
⛔ 不上 p1:⛔ 无数据风险、⛔ 无静默错值(500 是响的)、⛔ 无发布窗口约束;且 #17639 已把原始方言对象从这扇门移走,信封本身是对的、已编目。

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[os-musk]

Claim: domain:engine execution PM seat · session_01RuoNSXUbBoWHkNS4AknTrM · R2 · 2026-09-13 · dispatching to an os-dev agent.
Branch: claude/issue-17857-distinct-column-attribution
Clause-②: no

pm:queue → pm:dispatched,assignee os-musk。派发基 origin/main = dbea1756d9。Size M。

选取理由(order 逐条走过)

⛔ 无 p0 · ⛔ 无 target: · pm:blocking 按反向 Blocked-by: 索引计算(⛔ 不读优先级列):79 张 pm:blocked 解出 50 个 blocker(⭐ 控制项 50 > 0),本车道六张队列卡一个都不在其中 ⇒ ⛔ 无提升。

⇒ 余下按 p2 > p3。三张 p2 里本卡最先派,另两张的理由如下(⛔ 都不是「不重要」):

卡	处置	实测依据
#17676	⛔ 暂不派	裁决 5650202813(A′)把 item 1(platform-capabilities.ts 拆出常驻核心能力)判给 domain:spec 席的姊妹 PR,而本卡的验收 item 5(三探针重启后一致)依赖它。⭐ 实测:origin/main dbea1756d9 的 platform-capabilities.ts:50 仍是 'marketplace' ⇒ item 1 未落地;且全扫 146 张 domain:spec 开卡,无一提及 platform-capabilities / PLATFORM_CAPABILITY_TOKENS / sys_packages / 17676(⭐ 暗对照 0)⇒ 那份指派没有载体。已另行报出。
#17879	下一轮按面收窄派	⭐ 实测 IsAny<T> 是每文件各自声明(14 处),其中 3 个落在 #5499 冻结族(driver-memory ×2、driver-mongodb ×1)⇒ 整片清扫会跨进冻结面。

条款②认定:no(⛔ 不是回忆,是判例 + 本席自量)

读数	值
⭐ 同一扇门的判例	#17639 / PR #17858(本门的 envelope 半边,已落地 7c2c5aedd9)申报 Clause-②: no,定级 @objectstack/driver-sql: patch
要照搬的形状是否公开面	SqlDriver.aggregateBackendFault 在 sql-driver.ts:9443 是 protected ⇒ 新增的同形兄弟方法同样非公开
接受集是否移动	⛔ 否 —— 这一类调用两种情况下都被拒;变的是拒绝信封与归因(500/DATABASE_ERROR → 400/INVALID_FILTER 或 INVALID_FIELD),⛔ 不是「原本被拒的现在被接受」

⇒ no,预期定级 patch。⚠️ 后者本席标为【预期】:⛔ 由 dev 实测(该包 files[] 与 dist 命中)后定,本席不拿预期当结论。

⚠️ 给 dev 的要害

⭐ 卡面已经点名了要照搬的形状(aggregateBackendFault,#11541 为 aggregate() 门做过同一件事)与三条臂的划法(名字 == field / 名字在 filters AST 里 / 两者皆非)。⛔ 不要自己发明第四种归因。
⛔ 不要加 blanket 的 isUnresolvableColumnError 臂 —— 卡面写明这正是 #8931 裁决拒绝做的那种「不可支撑的归因」:对一个没传 filter 的 distinct(o,'nosuchcol') 调用者说「你的 FILTER 错了」。

_{domain:engine 执行 PM 席 · R2 · session_01RuoNSXUbBoWHkNS4AknTrM}

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[os-musk]

os-dev-report

{
"issue": 17857,
"status": "done",
"branch": "claude/issue-17857-distinct-column-attribution",
"pr": "#17945",
"premise_still_valid": true,
"summary": "All five measured rows reproduced at the dispatch base dbea175 before any edit, so no part of the card was already closed. SqlDriver.distinctBackendFault (protected, the member kind the aggregateBackendFault sibling uses) now classifies a dialect error leaving the distinct() door against the caller's own request: arm 1, the dialect-named column equals the field argument, answers INVALID_FIELD / 400 naming the listed column via a new unresolvableDistinctColumnRefusal composer carrying the field and object riders; arm 2, it does not, falls to #8790's existing unresolvableFilterColumnRefusal verbatim, since the statement's only remaining column sources are the WHERE compiled from filters and the tenant-scope predicate; arm 3, no parsed name, keeps #17639's terminal DATABASE_ERROR / 500 untouched. No blanket isUnresolvableColumnError arm, no minted code, no new dialect recognizer, no exported symbol moved, and nothing previously refused is now accepted. One departure from the dispatch brief, declared and measured: the brief paraphrased arm 2 as a positive search of the filters AST with 'neither' falling to the terminal, while the card's own text is the #11541 mirror in which arm 2 is the COMPLEMENT of arm 1. The complement landed. Ablation leg C implemented the brief's version and it silently downgrades a NESTED filter back to the 500 this card removes while staying green on every flat-filter pin. Both designs produce the identical five rows, so the card's own probe cannot tell them apart. The #17639 head note saying the distinct() attribution half 'is filed as its own card' was made false by this change and was corrected in the same diff.",
"tests": "FIVE ROWS, run not reasoned, embedded SQLite, throwaway probe at base dbea175 then at the fix (probe deleted before the PR; its assertions live on in the pin suite's 'all four read doors' case). BEFORE: count/where INVALID_FILTER 400; find/where INVALID_FILTER 400; aggregate/groupBy INVALID_FIELD 400; distinct(t,'title',{nosuchcol:1}) DATABASE_ERROR 500; distinct(t,'nosuchcol') DATABASE_ERROR 500. AFTER: rows 1-3 unchanged; row 4 INVALID_FILTER 400 with a message byte-identical to count() and find(); row 5 INVALID_FIELD 400, 'This query lists the distinct values of ...', the word filter absent. Row 4 lands in arm 2, row 5 in arm 1, and the neither/no-name case keeps the terminal. NEW PIN SUITE packages/drivers/driver-sql/src/sql-driver-17857-distinct-unresolvable-column-refusal.test.ts (437 lines, dialect-matrix sweep plus direct classifier units). SUITES: pnpm --filter @objectstack/driver-sql test exit 0, 177 files passed / 11 skipped, 2620 tests passed / 166 skipped (skips are the unprovisioned live PG and MySQL cells); pnpm --filter @objectstack/driver-sql typecheck exit 0; pnpm --filter '@objectstack/driver-sql^...' build exit 0; pnpm lint repo-wide exit 0, clean, so no narrowing is declared; control-character self-scan clean. GATES: 62 derived by scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack, 62 run, reconciled with --ran, re-run IN FULL at the final HEAD 15f26e6; 59 exit 0; 3 exit 3 = PREREQUISITE NOT MET = NOT MEASURED, neither pass nor failure, all three needing the whole workspace built (check:dual-build-cjs-loads, check:lean-entry-closure, check:type-check-debt) which CI does before those steps. check:doc-authoring went RED on this diff's first draft for a real defect of mine, a new logger.warn string carrying the literal issue ids; ids moved to the adjacent comment and the gate is green. ABLATION, three legs, fix committed first, every leg mutating the committed file: proof on disk by marker count plus git hash-object differing from the HEAD blob 6b7457d056, restore by git checkout HEAD -- PATH, restore proven by the on-disk blob hash equalling 6b7457d056 again with git diff HEAD empty and a residual marker count of 0. Leg A, delete arm 1, blob 18c0dcaf80, 6 failed / 12 passed. Leg B, delete arm 2, blob ee90517fce, 6 failed / 12 passed. Leg C, the brief's filters-AST search in place of the complement, blob abcb2146c3, 3 failed / 15 passed, and it is the discriminating leg: the flat-filter parity case stayed GREEN while the nested case failed with 'AssertionError: $or: code: expected DATABASE_ERROR to be INVALID_FILTER'. DIST MEASUREMENT grading the changeset, three readings plus a fourth: driver-sql declares files dist, README.md, CHANGELOG.md; positive control aggregateBackendFault hits dist/index.js, dist/index.mjs, dist/index.d.ts, dist/index.d.mts; this change's marker distinctBackendFault hits the SAME four, so a protected member does reach the published declaration; the new refusal sentence hits the two runtime bundles; fabricated negative control distinctBackendFaultNeverShipped reads 0; test-only symbol ClassifierProbe reads 0. Published bytes move, so the grade is forced to patch, never skip-changeset. The PM expectation was patch and the measurement CONFIRMS it rather than refuting it.",
"mcp_calls": "2 — create_pull_request and this comment; every read went through repo-scoped REST or git, and no dedupe search was needed because nothing was filed",
"open_questions": [
{
"question": "Arm 2 landed as the COMPLEMENT of arm 1 (the card's own text and the #11541 mirror) rather than as the positive filters-AST search the dispatch brief paraphrased. The two differ only outside the card's five rows, so the choice is a real contract decision the maintainer may want to confirm. Concretely they disagree on a column named by neither the field nor a top-level filter key: a NESTED filter key, and the tenant-scope predicate this method applies itself.",
"options": [
"A (landed) — complement: any dialect-named column that is not the field is attributed to a predicate. Complete by construction, needs no filter walker, keeps a nested filter and a tenant-scope column on the same INVALID_FILTER 400 that find(), count() and aggregate() already answer for them.",
"B (the brief's paraphrase) — positive search of the filters AST, everything else to the terminal. Ablation leg C measured it: the flat-filter pins stay green while { $or: [{ nosuchcol: 1 }] } regresses to DATABASE_ERROR 500, i.e. this card's own defect re-introduced one nesting level down, and a tenant-scope column likewise answers 500 where the other three doors answer 400."
],
"recommendation": "A, because it is what the card's text specifies, it is the shape #11541 already established one door over, the #8931 misattribution worry is fully dissolved by arm 1 (after arm 1 the only remaining column sources in the compiled statement really are predicates), and B was measured to re-open the defect for every filter shape its walker fails to cover while remaining invisible to flat-filter pins."
}
],
"out_of_scope_findings": [
"noted, not filed: driver-memory's half of the bare-filter asymmetry (a bare filter there returns the UNFILTERED set in silence, where this driver refuses loudly) is still open; it is already recorded in SqlDriver.distinct's own docblock, which notes the #5499 freeze dissolved 2026-08-11 with nothing claiming it since. Different condition from this card (a filter silently dropped, not a column that does not exist). Carrier: whoever takes the driver-memory filter-narrowing parity work, reached through the docblock any reader of this door already passes.",
"noted, not filed: #17590 (whether a json column should ANSWER a distinct read) is NOT addressed here and remains open. That is a column that EXISTS whose type has no equality operator, so it is not an unresolvable-column error and still leaves as #17639's terminal envelope; #17639's own pins are unchanged and its retirement clause still stands. Carrier: the #17590 card, which already owns the sibling LIKE-over-json divergence on the same columns.",
"noted, not filed: the dispatch brief and the card disagree on arm 2 (see open_questions). Recorded rather than filed because it is a question about this PR's own design, answered by ablation leg C and stated in the PR body; carrier: the PM seat reviewing this report."
]
}

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