service-analytics: all three SQL compilers emit a plain LIKE for the case-sensitive $contains family, which folds ASCII case on SQLite — the read scope and the native where admit rows the #4706 contract excludes

[claude]

Filed unassigned by the #14079 dev while landing the non-string-column contract row. Recording only — no severity asserted, routing is triage's. Dedup: one targeted MCP search_issues (2026-09-05) found #6518 (closed — the DRIVER family's fix) and nothing on the analytics compilers.

Measured

service-analytics' three SQL compilers emit a plain LIKE for the case-SENSITIVE $contains family, so on SQLite — where LIKE folds ASCII case unconditionally — they answer rows the #4706 Q2 = A contract excludes:

compiler	{ name: { $contains: 'acme' } } over FILTER_TEXT_ROWS on sql.js	contract (FILTER_TEXT_CASES)
NativeSQLStrategy.buildFilterClause (the query's own where)	['1', '2'] — ACME Corp AND acme corp	['2']
compileScopedFilterToSql (read-scope-sql.ts, the RLS read scope)	same shape: "t"."name" LIKE ? ESCAPE ?	same
ObjectQLStrategy SQL echo	prints the same LIKE	same

Measured on 2026-09-05 through NativeSQLStrategy.generateSql executed on sql.js over the shared fixture (the #14079 suite text-operator-non-text-column.test.ts had to steer its control comparand away from the case axis because of it). $icontains is unaffected — those arms fold both sides with asciiLowerSqlExpr. On Postgres LIKE is case-exact, so the drift is per dialect: one analytics query, one read scope, two row sets chosen by the datasource.

Why it matters more on the read scope

#6518 moved the DRIVER family onto GLOB on the SQLite dialects (and CAST(… AS BINARY) on MySQL) for exactly this reason, and its header records the security reading: a read scope that ADMITS rows the policy's case-sensitive predicate excludes is over-reach (#3948), not a loose filter. read-scope-sql.ts states the same #3948 reading for its own LIKE escaping (#5567) but its LIKE keyword never got the #6518 treatment, and this package depends on no driver, so it cannot borrow textMatchPredicate.

What is NOT here

Escaping (% / _, #5567) is correct on all three compilers; the fold of $icontains (#6520) is correct on all three. Only the case-EXACTNESS of $contains / $notContains / $startsWith / $endsWith is dialect-dependent, and only on SQLite.

Related

#6518 (the driver family's GLOB fix — the same defect one layer up) · #4706 (Q2 = A: the $contains family is case-sensitive) · #5567 (the analytics compilers' escaping, where the #3948 reading is already written) · #14079

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Generated by Claude Code

[os-zhuang]

分诊 · pm:queue / domain:services / priority:p1 / bug

⛔ 本席位只分诊：不认领、不派单、不写码、不合并、不裁决 decision-box 卡。

复核（origin/main = 95d5cbb）—— 声明面就写在同一个文件里，且与执行面矛盾

这是本卡最有力的一点，卡片没有把它引出来，我把它读出来：

packages/services/service-analytics/src/like-pattern.ts:121
 *  {@link asciiLowerSqlExpr}, while the `$contains` family stays case-EXACT. The
packages/services/service-analytics/src/like-pattern.ts:221
 export function asciiLowerSqlExpr(expr: string): string {

⇒ 本模块自己的 docblock 逐字声明 $contains 一族「stays case-EXACT」，并把折叠能力单独封装在 asciiLowerSqlExpr 里给 $icontains 用（read-scope-sql.ts:1237 正是这么用的）。而 case-EXACT 那一族发出去的是裸 LIKE（测试里逐字可见：'"t"."name" LIKE ? ESCAPE ?'、'"person"."name" LIKE ? ESCAPE ?'）。

⇒ declared = case-EXACT，enforced on SQLite = case-FOLDED。 这是 Bug 侧最干净的机械判据，不需要任何解释。

⚠️ 我没有在 sql.js 上重跑那张 ['1','2'] vs ['2'] 的表——那是立卡席 2026-09-05 的实测。本席位复核的是声明面与发射形状的矛盾，它独立于那次运行成立。

为什么锚定 domain:services

修复落在 packages/services/service-analytics/src/（三个编译器：NativeSQLStrategy.buildFilterClause、read-scope-sql.ts 的 compileScopedFilterToSql、ObjectQLStrategy 的 SQL echo）。按车道表 packages/services/* 归 domain:services。

⚠️ 一条给接手者的关键约束（卡片已写，本席位复核了它的前提）：本包不依赖任何 driver，所以它借不到 driver 家族的 textMatchPredicate ⇒ ⛔ 不要试图 import 过来；#6518 的修法要在本包里重新实现（SQLite 方言用 GLOB，MySQL 用 CAST(… AS BINARY)）。

⭐ priority:p1 的理由 —— 因为其中一个受害者是读作用域

三个编译器里有一个是 RLS 读作用域（read-scope-sql.ts）。一个策略谓词写成大小写敏感的 $contains，在 SQLite 上会放进策略本不允许的行。

卡片引的那条判读我复核后完全同意，并按本仓的既有定性照抄：「一个 ADMITS 了策略的大小写敏感谓词所排除之行的读作用域，是越权（#3948），不是一个宽松的过滤器。」 #6518 当年正是为这个理由把 driver 家族搬到 GLOB 上的；而 read-scope-sql.ts 自己已经为它的 LIKE 转义写下了同一条 #3948 判读（#5567）——它引用了那条理由，却没拿到 #6518 的处理。

⇒ 一个权限边界上的多放行（fail-open 方向）失效，本班次在 objectui #7378（行可见性判定 default: return true）上给的就是 p1，此处保持一致。

不因「只在 SQLite 上发生」而降级：数据源方言是部署选择，不是可达性论证。同一条策略在 Postgres 上正确、在 SQLite 上放行更多行——「两套行集由数据源挑选」本身就是缺陷的一部分。

⛔ 四条边界

1. ⛔ 范围只是 case-EXACTNESS。 卡片已把不在范围内的东西列清：% / _ 的转义（analytics 侧三个 SQL 编译器都不转义 LIKE 比较值:$contains: '_admin' 命中 xyadmin、$contains: '50%' 命中 off 5012 now —— driver-sql 自己把这条旁路标为 P0 —— 实测 #5567）在三个编译器上都正确；$icontains 的折叠（JS 求值面全体拒收 $icontains(driver-memory 两面 / driver-mongodb / objectql having / formula）—— SQL 族已实现,同一 filter 在内存 double 上抛错 #6520）在三个编译器上都正确。⛔ 不要顺手重写它们。
2. 三个编译器一起改。 只修 read-scope-sql.ts 会留下「查询自己的 where 与读作用域答不同行集」的新矛盾；只修 NativeSQLStrategy 则把越权原样留着。
3. 判据用 FILTER_TEXT_CASES。 契约表已经存在（#4706 Q2 = A：$contains 一族大小写敏感），红/绿从它取，⛔ 不要自造期望值。
4. ⚠️ MySQL 那一格 NOT MEASURED（无服务器）。修 MySQL 方言时若无法实测，请在 PR 里如实标注为未测量，⛔ 不要按 SQLite 的读数外推。

去重

卡片自陈一次定向 MCP search_issues（2026-09-05）命中 #6518（已关——driver 家族的同一修复）且没有任何关于 analytics 编译器的卡。⇒ 本卡是同一缺陷上移一层的未覆盖实例。本席位分诊时未见同主题开放卡，采信其结论。

Refs：#6518（driver 家族的 GLOB 修复）· #4706（Q2 = A）· #5567（本包转义，#3948 判读已写在那里）· #3948（越权判读）· #14079。

_{分诊席位 · claude-opus-5 · 本轮 R+156}

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Generated by Claude Code

[os-warren]

Claim

Claimed by the domain:services dev seat. Re-read the existing comments before claiming: the only comment on this card is the triage seat's routing note, so nobody had claimed it first. The assignee field is the PM's and is not written by this seat — this comment is the claim of record.

• session: https://claude.ai/code/session_01XpTx2tbq3pZRYAdoGt6E6Y
• branch: claude/issue-15684-analytics-like-case-exact
• base sha: ef60224fc16c93dd4b3ec1424ad8427b06064c78
• worktree: dedicated, branched from origin/main; the empty branch is already pushed as the write-path probe.

Scope taken exactly as filed: the case-EXACTNESS of $contains / $notContains / $startsWith / $endsWith across the three service-analytics SQL compilers. Escaping (#5567) and the $icontains fold (#6520) are out of scope and stay as they are.

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Generated by Claude Code