---
phase: 10-add-keyword-args-support-for-create-sema
verified: 2026-03-03T14:30:00Z
status: passed
score: 6/6 must-haves verified
re_verification: false
---

# Quick Task 10: Add Keyword Args Support for create_semantic_view Verification Report

**Task Goal:** Add keyword args support for create_semantic_view and all DDL variants
**Verified:** 2026-03-03T14:30:00Z
**Status:** PASSED
**Re-verification:** No — initial verification

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | `create_semantic_view` works with keyword args syntax (`name :=`, `tables :=`, etc.) | VERIFIED | Sections 16-17 in `test/sql/phase2_ddl.test` test `tables :=`, `dimensions :=`, `metrics :=` syntax; sqllogictest passes |
| 2 | `create_semantic_view` still works with positional args (backward compat) | VERIFIED | `SELECT * FROM create_semantic_view('x_test')` with minimal positional syntax passes in phase2_ddl.test section 10; all tests pass |
| 3 | `create_or_replace_semantic_view` and `create_semantic_view_if_not_exists` support keyword args | VERIFIED | Both registered via `register_table_function_with_extra_info::<DefineSemanticViewVTab, _>` in `src/lib.rs` (lines 373 and 386); keyword args tests pass |
| 4 | `drop_semantic_view` and `drop_semantic_view_if_exists` support keyword args | VERIFIED | Both registered via `register_table_function_with_extra_info::<DropSemanticViewVTab, _>` (lines 398 and 410); `DropSemanticViewVTab` implements `VTab` |
| 5 | All 5 DDL functions return a single row with the view name (VARCHAR) | VERIFIED | `bind.add_result_column("view_name", VARCHAR)` in both `define.rs` and `drop.rs`; `func()` emits `output.set_len(1)` with view name; all `statement ok` tests pass confirming no runtime errors |
| 6 | Full test suite passes (`cargo test`, sqllogictest, DuckLake CI) | VERIFIED | `cargo test`: 42 tests pass; `just test-sql`: 3 files pass (phase2_ddl, semantic_views, phase4_query); `just test-ducklake-ci`: 6/6 pass |

**Score:** 6/6 truths verified

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `src/ddl/define.rs` | `DefineSemanticViewVTab` implementing `VTab` with `named_parameters()` | VERIFIED | `impl VTab for DefineSemanticViewVTab` (line 104); `named_parameters()` returns 5 `LIST(STRUCT)` types (lines 205-243) |
| `src/ddl/drop.rs` | `DropSemanticViewVTab` implementing `VTab` with positional VARCHAR param | VERIFIED | `impl VTab for DropSemanticViewVTab` (line 70); `parameters()` returns `[VARCHAR]` (lines 135-138) |
| `src/ddl/parse_args.rs` | `parse_define_args_from_bind()` reading from `BindInfo` named params | VERIFIED | `pub fn parse_define_args_from_bind(bind: &BindInfo)` at line 108; reads all 5 named params via `get_named_parameter()` with FFI `duckdb_get_list_child` + `duckdb_get_struct_child` extraction |
| `src/lib.rs` | Registration changed from `register_scalar_function_with_state` to `register_table_function_with_extra_info` | VERIFIED | All 5 DDL registrations use `register_table_function_with_extra_info`; zero `register_scalar_function_with_state` calls remain |
| `test/sql/phase2_ddl.test` | SQL tests exercising keyword args syntax with `tables :=` | VERIFIED | Sections 16 and 17 test keyword args; `tables :=` appears 14 times throughout the file |

### Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `src/lib.rs` | `src/ddl/define.rs` | `register_table_function_with_extra_info::<DefineSemanticViewVTab, _>` | WIRED | Pattern found at lines 360, 373, 386 in `src/lib.rs` |
| `src/lib.rs` | `src/ddl/drop.rs` | `register_table_function_with_extra_info::<DropSemanticViewVTab, _>` | WIRED | Pattern found at lines 398, 410 in `src/lib.rs` |
| `src/ddl/define.rs` | `src/ddl/parse_args.rs` | `parse_define_args_from_bind()` called in `VTab::bind()` | WIRED | Import at line 11 and call at line 114 in `src/ddl/define.rs` |

**Key link note:** `value_raw_ptr` in `src/query/table_function.rs` was changed from private `unsafe fn` to `pub(crate) unsafe fn` (line 142) and is imported and used 5 times in `src/ddl/parse_args.rs` (line 28 import, lines 120/139/183/213/240 call sites).

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|-------------|-------------|--------|----------|
| KWARG-01 | 10-PLAN.md | Keyword args syntax for DDL table functions | SATISFIED | `named_parameters()` implemented; `tables :=` syntax tested in sqllogictest sections 16-17 |

### Anti-Patterns Found

No anti-patterns detected in modified files.

Scanned files: `src/ddl/define.rs`, `src/ddl/drop.rs`, `src/ddl/parse_args.rs`, `src/query/table_function.rs`, `src/lib.rs`, `test/sql/phase2_ddl.test`.

- No `TODO`, `FIXME`, `XXX`, `HACK`, or `PLACEHOLDER` comments in implementation files
- No empty implementations (`return null`, `return {}`, `return []`)
- No VScalar references remaining in DDL files
- No `register_scalar_function_with_state` calls in `src/lib.rs`

### Human Verification Required

None. All critical paths verified programmatically via the full test suite.

### Notable Design Deviation from Plan

The plan specified positional fallback for LIST(STRUCT) params (try named first, fall back to positional). The implementation deviates: only named parameters are supported for the 5 LIST(STRUCT) arguments. This is documented in the SUMMARY as an auto-fixed blocking issue — DuckDB infers `[]` as `INTEGER[]`, making positional LIST(STRUCT) calls infeasible. The `parse_define_args_from_bind` implementation uses `get_named_parameter()` only (no positional fallback for params 1-5). The view name (param 0) remains positional as designed.

This deviation is correct and intentional — named-only is the cleaner design and all tests confirm it works.

### Test Suite Results

| Test Suite | Result | Details |
|------------|--------|---------|
| `cargo test` | PASS | 36 unit tests + 5 vector reference tests + 1 doc test = 42 total |
| `just test-sql` | PASS | phase2_ddl.test, semantic_views.test, phase4_query.test all SUCCESS |
| `just test-ducklake-ci` | PASS | 6/6 tests pass |

`phase2_restart.test` is intentionally excluded from `just test-sql` (documented in `Makefile` lines 61-64 — Python sqllogictest runner cannot reload external extensions after `restart` directive). Restart persistence is covered by Rust integration tests.

---

_Verified: 2026-03-03T14:30:00Z_
_Verifier: Claude (gsd-verifier)_
