---
milestone: v0.6.0
audited: 2026-04-12T20:57:58Z
status: passed
scores:
  requirements: 34/34
  phases: 6/6
  integration: 34/34
  flows: 4/4
gaps:
  requirements: []
  integration: []
  flows: []
tech_debt:
  - phase: 43-metadata-foundation
    items:
      - "REQUIREMENTS.md checkboxes for META-01 through META-07 still [ ] despite implementation complete"
      - "VALIDATION.md is draft (nyquist_compliant: false)"
  - phase: 44-show-describe-metadata-surface-enhancements
    items:
      - "REQUIREMENTS.md checkboxes for SHOW-01 through SHOW-06 still [ ] despite implementation complete"
      - "VALIDATION.md is draft (nyquist_compliant: false)"
  - phase: 45-alter-comment-get-ddl
    items:
      - "REQUIREMENTS.md checkboxes for SHOW-07 and SHOW-08 still [ ] despite implementation complete"
      - "VALIDATION.md is draft (nyquist_compliant: false)"
  - phase: 46-wildcard-selection-queryable-facts
    items:
      - "VALIDATION.md is draft (nyquist_compliant: false)"
  - phase: 47-semi-additive-metrics
    items:
      - "VALIDATION.md is draft (nyquist_compliant: false)"
  - phase: 48-window-function-metrics
    items:
      - "REQUIREMENTS.md checkbox for WIN-01 still [ ] despite implementation complete"
      - "VALIDATION.md is draft (nyquist_compliant: false)"
nyquist:
  compliant_phases: []
  partial_phases:
    - 43
    - 44
    - 45
    - 46
    - 47
    - 48
  missing_phases: []
  overall: partial
---

# Milestone v0.6.0 Audit: Snowflake SQL DDL Parity

**Audited:** 2026-04-12T20:57:58Z
**Status:** passed
**Phases:** 6/6 complete and verified
**Requirements:** 34/34 satisfied

## Phase Verification Summary

| Phase | Name | Status | Score | Quality Gate |
|-------|------|--------|-------|--------------|
| 43 | Metadata Foundation | passed | 5/5 truths | 518 cargo + 20 sqllogictest |
| 44 | SHOW/DESCRIBE Metadata Surface + Enhancements | passed | 5/5 truths | 527 cargo + 24 sqllogictest |
| 45 | ALTER COMMENT + GET_DDL | passed | 9/9 truths | 84 new tests + 26 sqllogictest |
| 46 | Wildcard Selection + Queryable FACTS | passed | 5/5 truths | 583 cargo + 28 sqllogictest |
| 47 | Semi-Additive Metrics | passed | 5/5 truths | 617 cargo + 29 sqllogictest |
| 48 | Window Function Metrics | passed | 5/5 truths | 646 cargo + 30 sqllogictest + 6 DuckLake CI |

All phases passed the full quality gate (`just test-all`): Rust unit tests, property-based tests, sqllogictest integration tests, and DuckLake CI tests.

## Requirements Coverage (3-Source Cross-Reference)

### Metadata (Phase 43)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| META-01 | COMMENT on semantic view | SATISFIED | — | [ ] | satisfied |
| META-02 | COMMENT on tables/dims/metrics/facts | SATISFIED | — | [ ] | satisfied |
| META-03 | WITH SYNONYMS on entries | SATISFIED | — | [ ] | satisfied |
| META-04 | PRIVATE/PUBLIC on facts/metrics | SATISFIED | — | [ ] | satisfied |
| META-05 | PRIVATE hidden from queries | SATISFIED | — | [ ] | satisfied |
| META-06 | Metadata persistence + backward compat | SATISFIED | — | [ ] | satisfied |
| META-07 | Pre-v0.6.0 views load without error | SATISFIED | — | [ ] | satisfied |

### Introspection (Phases 44-45)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| SHOW-01 | SHOW commands include synonyms/comment | SATISFIED | — | [ ] | satisfied |
| SHOW-02 | IN SCHEMA scope filtering | SATISFIED | — | [ ] | satisfied |
| SHOW-03 | IN DATABASE scope filtering | SATISFIED | — | [ ] | satisfied |
| SHOW-04 | SHOW TERSE reduced columns | SATISFIED | — | [ ] | satisfied |
| SHOW-05 | SHOW COLUMNS unified list | SATISFIED | — | [ ] | satisfied |
| SHOW-06 | DESCRIBE metadata properties | SATISFIED | — | [ ] | satisfied |
| SHOW-07 | GET_DDL re-executable output | SATISFIED | listed | [ ] | satisfied |
| SHOW-08 | GET_DDL round-trip fidelity | SATISFIED | listed | [ ] | satisfied |

### ALTER DDL (Phase 45)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| ALT-01 | ALTER SET COMMENT | SATISFIED | — | [x] | satisfied |
| ALT-02 | ALTER UNSET COMMENT | SATISFIED | — | [x] | satisfied |

### Wildcard Selection (Phase 46)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| WILD-01 | Dimension wildcard table_alias.* | SATISFIED | — | [x] | satisfied |
| WILD-02 | Metric wildcard table_alias.* | SATISFIED | — | [x] | satisfied |
| WILD-03 | PRIVATE exclusion in wildcards | SATISFIED | — | [x] | satisfied |

### Queryable FACTS (Phase 46)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| FACT-01 | Query facts via semantic_view() | SATISFIED | — | [x] | satisfied |
| FACT-02 | Unaggregated row-level results | SATISFIED | — | [x] | satisfied |
| FACT-03 | Facts + metrics mutual exclusion | SATISFIED | — | [x] | satisfied |
| FACT-04 | Same logical table path constraint | SATISFIED | — | [x] | satisfied |

### Semi-Additive Metrics (Phase 47)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| SEMI-01 | NON ADDITIVE BY declaration | SATISFIED | — | [x] | satisfied |
| SEMI-02 | CTE-based snapshot selection | SATISFIED | — | [x] | satisfied |
| SEMI-03 | Mixed regular + semi-additive | SATISFIED | — | [x] | satisfied |
| SEMI-04 | Fan trap interaction | SATISFIED | — | [x] | satisfied |
| SEMI-05 | Multi-table JOINs | SATISFIED | — | [x] | satisfied |

### Window Function Metrics (Phase 48)

| Req | Description | VERIFICATION | SUMMARY | REQUIREMENTS.md | Final |
|-----|-------------|-------------|---------|-----------------|-------|
| WIN-01 | PARTITION BY EXCLUDING DDL | SATISFIED | listed | [ ] | satisfied |
| WIN-02 | Non-aggregated window results | SATISFIED | — | [x] | satisfied |
| WIN-03 | Window + aggregate mixing error | SATISFIED | — | [x] | satisfied |
| WIN-04 | Fan trap exclusion | SATISFIED | — | [x] | satisfied |
| WIN-05 | SHOW DIMS required=TRUE | SATISFIED | — | [x] | satisfied |

**All 34 requirements satisfied. 0 orphaned requirements. 0 unsatisfied requirements.**

Note: 16 REQUIREMENTS.md checkboxes remain `[ ]` despite verified implementation. These are documentation tracking gaps — the code, tests, and VERIFICATION.md evidence all confirm satisfaction. SUMMARY frontmatter `requirements_completed` was populated for only 3 of 34 requirements (SHOW-07, SHOW-08, WIN-01); this is a convention gap across the milestone, not an implementation gap.

## Cross-Phase Integration

**47 exports properly wired across phases. 0 orphaned exports. 0 missing connections.**

### E2E Flow Verification

| # | Flow | Status | Key Wiring Points |
|---|------|--------|-------------------|
| 1 | Metadata → SHOW/DESCRIBE → ALTER → GET_DDL | COMPLETE | model.rs fields → 4 SHOW VTabs + DESCRIBE → alter.rs catalog mutate → render_ddl.rs reconstruction |
| 2 | PRIVATE visibility through wildcards + SHOW COLUMNS | COMPLETE | AccessModifier enforced at 3 points: wildcard.rs, show_columns.rs, sql_gen.rs expand() |
| 3 | Semi-additive + window metrics with fan trap | COMPLETE | fan_trap.rs skips both metric types; dispatch priority: facts → semi-additive → window → regular |
| 4 | GET_DDL round-trip for all v0.6.0 features | COMPLETE | render_ddl.rs covers COMMENT, SYNONYMS, PRIVATE, NON ADDITIVE BY, OVER clause; sqllogictest Case 6 proves equality |

### Backward Compatibility

All new model fields use `#[serde(default, skip_serializing_if)]`. Pre-v0.6.0 JSON deserializes with correct defaults:
- `comment` → `None`, `synonyms` → `[]`, `access` → `Public`, `non_additive_by` → `[]`, `window_spec` → `None`

Verified by `pre_v060_json_deserializes_with_defaults` unit test and the full DDL→persist→reload pipeline.

## Tech Debt

### Documentation Tracking Gaps

| Phase | Items |
|-------|-------|
| 43 | META-01 through META-07 checkboxes unchecked in REQUIREMENTS.md |
| 44 | SHOW-01 through SHOW-06 checkboxes unchecked in REQUIREMENTS.md |
| 45 | SHOW-07, SHOW-08 checkboxes unchecked in REQUIREMENTS.md |
| 48 | WIN-01 checkbox unchecked in REQUIREMENTS.md |

**Total: 16 checkboxes need updating** — all are documentation-only; implementations verified.

### Nyquist Validation

All 6 VALIDATION.md files exist but remain in draft status (`nyquist_compliant: false`, `wave_0_complete: false`).

| Phase | VALIDATION.md | Compliant | Action |
|-------|---------------|-----------|--------|
| 43 | exists | false (draft) | `/gsd-validate-phase 43` |
| 44 | exists | false (draft) | `/gsd-validate-phase 44` |
| 45 | exists | false (draft) | `/gsd-validate-phase 45` |
| 46 | exists | false (draft) | `/gsd-validate-phase 46` |
| 47 | exists | false (draft) | `/gsd-validate-phase 47` |
| 48 | exists | false (draft) | `/gsd-validate-phase 48` |

## Anti-Patterns

No TODO/FIXME/HACK/placeholder comments or stub implementations found across any of the 6 phases.

## Deferred Items

| Phase | Item | Addressed |
|-------|------|-----------|
| 43 | PrivateFact enforcement at query time | Phase 46 (FACT-01 path built, PrivateFact error wired) |

---

_Audited: 2026-04-12T20:57:58Z_
_Auditor: Claude (gsd-audit-milestone)_
