---
phase: quick-12
verified: 2026-03-03T00:00:00Z
status: passed
score: 6/6 must-haves verified
re_verification: false
---

# Quick Task 12: Remove Time Dimensions and Granularities — Verification Report

**Task Goal:** Remove time_dimensions and granularities, merge into regular dimensions
**Verified:** 2026-03-03
**Status:** passed
**Re-verification:** No — initial verification

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | `time_dimensions` named parameter no longer exists in DDL functions | VERIFIED | `src/ddl/define.rs` `named_parameters()` returns 4 entries: `tables`, `relationships`, `dimensions`, `metrics` — no `time_dimensions` entry present |
| 2 | `granularities` named parameter no longer exists in semantic_view query function | VERIFIED | `src/query/table_function.rs` `named_parameters()` returns 2 entries: `dimensions`, `metrics` — no `granularities` entry present. Same in `src/query/explain.rs`. |
| 3 | Dimension struct has no `dim_type` or `granularity` fields | VERIFIED | `src/model.rs` `Dimension` struct has exactly 4 fields: `name: String`, `expr: String`, `source_table: Option<String>`, `output_type: Option<String>`. Zero grep hits for `dim_type` or `granularity` in all source files. |
| 4 | QueryRequest has no `granularity_overrides` field | VERIFIED | `src/expand.rs` `QueryRequest` struct has exactly 2 fields: `dimensions: Vec<String>`, `metrics: Vec<String>`. No `granularity_overrides` field. `HashMap` import removed from expand.rs. |
| 5 | Users express date truncation via the dimension expr directly (e.g. `date_trunc('month', col)`) | VERIFIED | `src/expand.rs` line 460: `let base_expr = dim.expr.clone();` — expr is used directly with no time branch. `test/sql/phase4_query.test` line 284 uses `date_trunc('month', event_date)` in dimension expr. `fuzz/fuzz_targets/fuzz_query_names.rs` uses `date_trunc('month', created_at)` as a regular dimension expr. |
| 6 | All existing tests pass with the simplified model | VERIFIED | `cargo test`: all tests pass (Rust unit + proptest + doc tests). `just test-sql`: 3/3 SQL logic tests pass (phase2_ddl.test, semantic_views.test, phase4_query.test). `just test-ducklake-ci`: 6/6 integration tests pass including Test 6 (date_trunc day dimension). |

**Score:** 6/6 truths verified

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `src/model.rs` | Simplified Dimension struct without dim_type/granularity | VERIFIED | Dimension has 4 fields: name, expr, source_table, output_type. `from_json()` is pure serde deserialize. No `time_dimension_tests` module. |
| `src/expand.rs` | Simplified expand without time dimension codegen | VERIFIED | QueryRequest has 2 fields. `expand()` uses `dim.expr.clone()` directly (line 460). No `time_dimension_expand_tests` module. No HashMap import. |
| `src/ddl/define.rs` | DDL function with 4 named params (no time_dimensions) | VERIFIED | `named_parameters()` returns exactly 4 entries: tables, relationships, dimensions, metrics. |
| `src/ddl/parse_args.rs` | Argument parsing without time_dimensions | VERIFIED | 4 param sections (name, tables, relationships, dimensions, metrics). No VALID_GRANULARITIES, no validate_granularity, no time_dimensions parsing block. |
| `src/query/table_function.rs` | Query function without granularities parameter | VERIFIED | `named_parameters()` returns 2 entries: dimensions, metrics. No `extract_map_strings()`. QueryRequest constructed at line 390 with only dimensions and metrics fields. |

### Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `src/ddl/parse_args.rs` | `src/model.rs` | Dimension struct construction | WIRED | Line 171: `dimensions.push(Dimension { name: dim_name, expr: dim_expr, source_table, output_type: None })` — no dim_type/granularity fields |
| `src/expand.rs` | `src/model.rs` | Dimension field access in expand() | WIRED | Line 460: `let base_expr = dim.expr.clone();` — direct expr access, no conditional time branch |
| `src/query/table_function.rs` | `src/expand.rs` | QueryRequest construction | WIRED | Line 390: `let req = QueryRequest { dimensions: dimensions.clone(), metrics: metrics.clone() }` — 2 fields only |

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|------------|-------------|--------|----------|
| QUICK-12 | 12-PLAN.md | Remove time_dimensions and granularities, merge into regular dimensions | SATISFIED | All 6 success criteria from plan verified: test-all passes, no time_dimensions param in DDL, no granularities param in query, Dimension struct has 4 fields, QueryRequest has 2 fields, zero grep hits for removed symbols in src/, README updated |

### Anti-Patterns Found

No anti-patterns found. Full scan of modified files shows:
- No TODO/FIXME/placeholder comments in the changed files
- No empty implementations or stubs
- No console.log-only handlers
- The `phase12_model_tests` module in `src/model.rs` is substantive (roundtrip tests for output_type and column_types_inferred)
- `src/ddl/parse_args.rs` has no test module but this is consistent with the file being a pure FFI parsing layer tested via SQL integration tests

### Human Verification Required

None. All observable truths were verifiable programmatically through static analysis and the full test suite.

### Verification Summary

The task goal is fully achieved. All six observable truths verified:

1. `time_dimensions` is absent from all DDL named parameters — confirmed by reading `src/ddl/define.rs` `named_parameters()`.
2. `granularities` is absent from all query named parameters — confirmed by reading `src/query/table_function.rs` and `src/query/explain.rs`.
3. `Dimension` struct is simplified to 4 fields — confirmed by reading `src/model.rs`.
4. `QueryRequest` is simplified to 2 fields — confirmed by reading `src/expand.rs`.
5. Date truncation is expressed via dimension expr directly — confirmed in expand.rs expand logic and updated test files.
6. Full test suite passes — `cargo test` (all pass), `just test-sql` (3/3), `just test-ducklake-ci` (6/6, including the date_trunc integration test).

Zero grep hits for any of the removed symbols (`dim_type`, `granularity_overrides`, `time_dimensions_type`, `extract_map_strings`, `validate_granularity`, `VALID_GRANULARITIES`) across all source, test, and fuzz directories.

---

_Verified: 2026-03-03T00:00:00Z_
_Verifier: Claude (gsd-verifier)_
