---
phase: 17-ddl-execution
verified: 2026-03-07T23:45:00Z
status: passed
score: 4/4 must-haves verified
re_verification: false
---

# Phase 17: DDL Execution Verification Report

**Phase Goal:** `CREATE SEMANTIC VIEW name (tables := [...], dimensions := [...], metrics := [...])` creates a semantic view that is immediately queryable via the existing `semantic_view()` table function
**Verified:** 2026-03-07T23:45:00Z
**Status:** passed
**Re-verification:** No — initial verification

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | CREATE SEMANTIC VIEW sales (...) creates a view in the catalog | VERIFIED | `test/sql/phase16_parser.test` line 45-50: `statement ok CREATE SEMANTIC VIEW sales_view (...)` passes; subsequent `semantic_view()` query returns data |
| 2 | View created via native DDL is queryable via semantic_view() | VERIFIED | `test/sql/phase16_parser.test` lines 57-60: `SELECT * FROM semantic_view('sales_view', ...)` returns `East 300.0 / West 150.0`; `just test-sql` 4/4 SUCCESS |
| 3 | Existing function-based DDL (create_semantic_view) still works | VERIFIED | `test/sql/phase16_parser.test` lines 67-79: function-based `create_semantic_view('sales_fn_view', ...)` succeeds and is queryable; pre-existing `phase2_ddl.test` and `phase4_query.test` also pass |
| 4 | Extension loads in DuckDB CLI and Python client | VERIFIED | `just test-sql` (CLI via sqllogictest runner) 4/4 SUCCESS; `just test-ducklake-ci` (Python) 6/6 PASSED |

**Score:** 4/4 truths verified

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `src/parse.rs` | DDL text parsing and rewriting functions + FFI execution entry point | VERIFIED | `parse_ddl_text` (line 51), `rewrite_ddl_to_function_call` (line 108), `sv_execute_ddl_rust` (line 174, feature-gated). 19 unit tests passing. |
| `cpp/src/shim.cpp` | Real plan function with DDL-executing TableFunction | VERIFIED | `sv_plan_function` (line 151), `sv_ddl_bind` (line 95), `sv_ddl_init_global` (line 129), `sv_ddl_execute` (line 135). All stub code removed. |
| `src/lib.rs` | DDL connection creation and passing to C++ hooks | VERIFIED | `ddl_conn` created at line 444, passed to `sv_register_parser_hooks(db_handle, ddl_conn)` at line 454. Always created (even for in-memory). |
| `test/sql/phase16_parser.test` | End-to-end native DDL integration test | VERIFIED | Tests DDL-01 (native CREATE, lines 45-50), DDL-02 (query created view, lines 57-60), DDL-03 (function DDL coexistence, lines 67-79), PARSE-02 (case-insensitive, lines 85-96). |

### Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `cpp/src/shim.cpp (sv_ddl_bind)` | `src/parse.rs (sv_execute_ddl_rust)` | extern C FFI call | WIRED | `sv_execute_ddl_rust` declared in `extern "C"` block (lines 38-43) and called at line 111 of `sv_ddl_bind` |
| `cpp/src/shim.cpp (sv_plan_function)` | `cpp/src/shim.cpp (sv_ddl_bind)` | TableFunction bind callback | WIRED | `sv_plan_function` constructs `TableFunction("sv_ddl_internal", ..., sv_ddl_execute, sv_ddl_bind, sv_ddl_init_global)` at line 157-160 |
| `src/lib.rs (init_extension)` | `cpp/src/shim.cpp (sv_register_parser_hooks)` | extern C call passing ddl_conn | WIRED | `sv_register_parser_hooks(db_handle, ddl_conn)` at line 454; `ddl_conn` parameter in Rust extern declaration at line 302 |
| `src/parse.rs (rewrite_ddl_to_function_call)` | `create_semantic_view table function` | SQL rewrite executed on ddl_conn | WIRED | `rewrite_ddl_to_function_call` produces `SELECT * FROM create_semantic_view('{safe_name}', {body})` (line 112); `sv_execute_ddl_rust` executes it via `ffi::duckdb_query(exec_conn, ...)` (line 203) |

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|------------|-------------|--------|----------|
| DDL-01 | 17-01-PLAN.md | CREATE SEMANTIC VIEW creates a view via parser hook chain | SATISFIED | `test/sql/phase16_parser.test` section 3 (lines 45-50): `statement ok CREATE SEMANTIC VIEW sales_view (...)` passes; view is in catalog |
| DDL-02 | 17-01-PLAN.md | View created via native DDL is queryable via semantic_view() | SATISFIED | `test/sql/phase16_parser.test` section 4 (lines 57-60): query returns East 300.0 / West 150.0; `just test-sql` SUCCESS |
| DDL-03 | 17-01-PLAN.md | Existing function-based DDL continues to work alongside native DDL | SATISFIED | `test/sql/phase16_parser.test` section 5 (lines 67-79) + existing `phase2_ddl.test` + `phase4_query.test` all pass |
| BUILD-03 | 17-01-PLAN.md | Extension loads in DuckDB CLI and Python client | SATISFIED | CLI: `just test-sql` 4/4 SUCCESS; Python: `just test-ducklake-ci` 6/6 PASSED |

**No orphaned requirements.** REQUIREMENTS.md traceability table maps DDL-01, DDL-02, DDL-03, BUILD-03 exclusively to Phase 17, and all are SATISFIED.

### Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| None | — | No stubs, placeholders, or incomplete implementations found | — | — |

Verification confirms:
- All `sv_plan_stub` / `sv_stub_bind` / `sv_stub_execute` code has been replaced — no matches found.
- No `TODO`, `FIXME`, `HACK`, `PLACEHOLDER`, or "stub fired" strings in any modified file.
- `sv_execute_ddl_rust` is feature-gated (`#[cfg(feature = "extension")]`) and not a stub — it performs real DDL execution via `ffi::duckdb_query`.

### Human Verification Required

None. All phase success criteria are verifiable programmatically:

1. Create + query roundtrip: covered by `just test-sql` with expected output assertions in sqllogictest.
2. Python client load: covered by `just test-ducklake-ci` which imports and uses the extension via Python DuckDB.
3. Case-insensitive DDL: covered by `phase16_parser.test` section 6 with `create semantic view` (lowercase).

### Gaps Summary

No gaps. All 4 observable truths are verified, all 4 artifacts pass levels 1–3 (exist, substantive, wired), all 4 key links are confirmed in the code, and all 4 requirements (DDL-01, DDL-02, DDL-03, BUILD-03) are satisfied by the test suite.

**Test suite results at verification time:**
- `cargo test`: 102 tests passed (including 19 parse module tests)
- `just test-sql`: 4/4 sqllogictest files SUCCESS (phase2_ddl.test, semantic_views.test, phase4_query.test, phase16_parser.test)
- `just test-ducklake-ci`: 6/6 DuckLake CI tests PASSED

---

_Verified: 2026-03-07T23:45:00Z_
_Verifier: Claude (gsd-verifier)_
