diff --git a/examples/app-crm/src/datasets/opportunity.dataset.ts b/examples/app-crm/src/datasets/opportunity.dataset.ts
index 993d0422ed..54b60a3abf 100644
--- a/examples/app-crm/src/datasets/opportunity.dataset.ts
+++ b/examples/app-crm/src/datasets/opportunity.dataset.ts
@@ -18,6 +18,10 @@ export const OpportunityDataset = defineDataset({
 
   dimensions: [
     { name: 'stage', label: 'Stage', field: 'stage', type: 'string' },
+    // Lookup dimension — the analytics layer resolves the account FK to its
+    // display name in `rows`, but exposes the raw FK via drillRawRows so a
+    // report drill filters by the stored id (ADR-0021 D2), not the name.
+    { name: 'account', label: 'Account', field: 'account', type: 'lookup' },
     // ADR-0021 single-form: the monthly bucketing the trend widget used to carry
     // as `categoryGranularity: 'month'` now lives on the dimension itself.
     { name: 'close_date', label: 'Close Date', field: 'close_date', type: 'date', dateGranularity: 'month' },
diff --git a/examples/app-crm/src/reports/index.ts b/examples/app-crm/src/reports/index.ts
index 5cb0f1dbce..257688117e 100644
--- a/examples/app-crm/src/reports/index.ts
+++ b/examples/app-crm/src/reports/index.ts
@@ -1,3 +1,4 @@
 // Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
 
 export { SalesByStageReport } from './sales-by-stage.report.js';
+export { SalesByAccountReport } from './sales-by-account.report.js';
diff --git a/examples/app-crm/src/reports/sales-by-account.report.ts b/examples/app-crm/src/reports/sales-by-account.report.ts
new file mode 100644
index 0000000000..499e3abce2
--- /dev/null
+++ b/examples/app-crm/src/reports/sales-by-account.report.ts
@@ -0,0 +1,24 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+import type * as UI from '@objectstack/spec/ui';
+
+/**
+ * Example report — total opportunity amount grouped by ACCOUNT.
+ *
+ * Bound to `opportunity_metrics` with rows = `account`, a LOOKUP dimension.
+ * The analytics layer resolves each account FK to its display name in `rows`,
+ * but exposes the raw FK via `drillRawRows` + `dimensionFields` (ADR-0021 D2),
+ * so drilling a row filters the opportunity list by the account's stored id —
+ * not its (possibly non-unique) display name. Paired with the currency-aware
+ * `total_amount` measure (USD), this exercises both render paths — Intl
+ * currency formatting AND raw-value lookup drill — end to end.
+ */
+export const SalesByAccountReport: UI.ReportInput = {
+  name: 'crm_sales_by_account',
+  label: 'Sales by Account',
+  description: 'Total opportunity amount grouped by account (lookup-dimension drill).',
+  type: 'summary',
+  dataset: 'opportunity_metrics',
+  rows: ['account'],
+  values: ['total_amount'],
+};
diff --git a/packages/services/service-analytics/src/__tests__/query-dataset.test.ts b/packages/services/service-analytics/src/__tests__/query-dataset.test.ts
index 2a8c9ad399..dba49e6c2c 100644
--- a/packages/services/service-analytics/src/__tests__/query-dataset.test.ts
+++ b/packages/services/service-analytics/src/__tests__/query-dataset.test.ts
@@ -154,4 +154,23 @@ describe('AnalyticsService.queryDataset', () => {
     expect(result.object).toBeUndefined();
     expect(result.drillRawRows).toBeUndefined();
   });
+
+  it('marks a LOOKUP dimension drillable, exposing the raw FK for exact-match drill', async () => {
+    const byAccount = DatasetSchema.parse({
+      name: 'sales_acct', label: 'Sales', object: 'opportunity', include: [],
+      dimensions: [{ name: 'account', field: 'account', type: 'lookup', label: 'Account' }],
+      measures: [{ name: 'revenue', aggregate: 'sum', field: 'amount', certified: true }],
+    });
+    const svc = new AnalyticsService({
+      queryCapabilities: () => ({ nativeSql: true, objectqlAggregate: false, inMemory: false }),
+      executeRawSql: async () => [{ account: 'acc_123', revenue: 1000 }],
+      getReadScope: (_o, ctx?: ExecutionContext) => (ctx?.tenantId ? { organization_id: ctx.tenantId } : undefined),
+    });
+    const result = await svc.queryDataset(byAccount, { dimensions: ['account'], measures: ['revenue'] }, { tenantId: 'org_A' } as ExecutionContext) as any;
+    // A lookup dim IS drillable (unlike a date bucket): its raw FK is exposed so
+    // the report drill filters by the stored id, not the resolved display name.
+    expect(result.object).toBe('opportunity');
+    expect(result.dimensionFields).toEqual({ account: 'account' });
+    expect(result.drillRawRows).toEqual([{ account: 'acc_123' }]);
+  });
 });