F1/F2/F3 from the whole-Phase-4 /runda (handoff-42 §3):
- F3: drop an anonymous composite UNIQUE via a derived, engine-neutral
name `unique_<cols>` — recomputed live, nothing persisted, reusing the
existing `DROP CONSTRAINT <name>` grammar (no new syntax/metadata, the
§4g anonymity decision intact). A name matching more than one UNIQUE is
refused as ambiguous, never guessed. One undo step. `describe`
annotates each composite UNIQUE with its name.
- F1: dropping a column a composite UNIQUE covers is refused up-front
with the derived name + the actionable drop command (was an unhelpful
generic engine refusal).
- F2: contextless friendly_message() no longer leaks a literal `{table}`
in the generic hint (new `error.generic.hint_no_table`, selected when
no table is in context). The table-ful path is unchanged.
Docs: ADR-0035 Amendment 1 + Status + README index + plan
docs/plans/20260526-adr-0035-composite-unique-drop-f1f2f3.md.
Tests: +5 (drop-by-name, ambiguous-refused, one-undo-step, F1 guard,
F2 no-leak) + a describe-render assertion. 1922 pass / 0 fail / 0 skip;
clippy clean.
Advanced-mode SQL CREATE [UNIQUE] INDEX [IF NOT EXISTS] [<name>] ON
<T> (cols) -> SqlCreateIndex and DROP INDEX [IF EXISTS] <name> ->
SqlDropIndex, both reusing the ADR-0025 executors (do_add_index /
do_drop_index), like 4c reused do_drop_table.
- CREATE UNIQUE INDEX admitted in advanced mode (ADR-0025 Amendment 1):
ADR-0025 deferred UNIQUE indexes for the simple-mode DSL, but advanced
mode trusts the user like SQL does. Adds an additive IndexSchema.unique
flag (project.yaml, serde-default, version stays 1); rebuild re-emits
CREATE UNIQUE INDEX; the redundant-set guard keys on (columns, unique).
Simple-mode `add unique index` stays deferred.
- IF [NOT] EXISTS on both forms reuses the 4c no-op-with-note skip
(journalled, not snapshotted) via CreateIndexOutcome / DropIndexOutcome.
- Unnamed CREATE INDEX auto-named (ADR-0025 convention); the [UNIQUE]
prefix is a concrete-keyword Choice and the optional name an on-led-first
selector (the drop-index selector precedent) — trap-safe.
- create/drop each gain a second advanced node; the existing all-candidates
dispatch handles it (locked by parse tests).
- Unique indexes marked [unique] in the structure view and items panel.
- do_add_index refuses internal __rdbms_* tables as "no such table",
closing a latent exposure on both the simple `add index` and the new
SQL CREATE INDEX surfaces (ADR-0025 Amendment 1).
Docs: ADR-0035 status + §13 4d + 4i; ADR-0025 Amendment 1; ADR README;
requirements.md Q1/C3. Plan: docs/plans/20260525-adr-0035-sql-ddl-4d.md.
Tests: 1834 passing / 0 failing / 0 skipped / 1 ignored; clippy clean.
The fourth constraint. `check ( <expr> )` reuses the ADR-0026
WHERE-expression grammar via `Subgrammar`, so a check is
written in the same language as a `where` filter.
- Grammar: a `CHECK_CONSTRAINT` arm joins the shared
constraint-suffix Choice; `consume_check_expr` extracts the
parenthesised expression (paren-depth aware) into
`ColumnSpec.check` / `Command::AddColumn.check`.
- Storage: the parsed `Expr` is compiled once to inline SQL
(`compile_check_sql` — `compile_expr` + ADR-0028's
param-inliner) and stored in that form everywhere — a new
`check_expr` column in `__rdbms_playground_columns`,
`project.yaml`'s `ColumnSchema.check`, and the column DDL
emitted by `do_create_table` / `schema_to_ddl`.
- `add column … check` routes through the rebuild primitive
(SQLite's `ALTER … ADD COLUMN` cannot carry it); a CHECK on
a serial/shortid column is create-table-only and refused at
add-column with a friendly message.
- `describe` surfaces the CHECK. ADR-0029 §7/§8 updated to the
SQL-form decision — double-quoted identifiers, consistent
with ADR-0028's `explain` display SQL.
1201 tests pass (+8); clippy clean.
The database layer now honours the ColumnSpec constraint
fields end to end, ahead of the grammar that lets users type
them.
- `do_create_table` emits ` NOT NULL` / ` UNIQUE` / ` DEFAULT
<literal>` per column via the new `column_constraints_sql`
helper (the default literal bound against the column's type).
- `ReadColumn` gains `default_sql`, read from
`pragma_table_info.dflt_value`; `schema_to_ddl` emits it, so
the rebuild-table primitive preserves DEFAULT — it already
preserved NOT NULL / UNIQUE.
- `ColumnDescription` gains `unique` / `default`;
`do_describe_table` now sources columns from `read_schema`
(one source of per-column truth) and `constraints_display`
lists PK / NOT NULL / UNIQUE / DEFAULT.
No user-facing change yet — no grammar produces constrained
columns. Tests exercise creation, enforcement, describe, and
rebuild-preservation programmatically.
1177 tests pass (+5); clippy clean.
`render_explain_plan` now classifies each plan node and colours
its category-bearing keywords through the styled-runs mechanism.
- `PLAN_TAXONOMY`: a substring-pattern table mapping the
engine's plan vocabulary to four semantic classes — full
scan / temp B-tree -> Expensive, index search / covering
index / PK lookup -> Efficient, automatic index ->
AutomaticIndex. An unrecognised detail renders neutral, since
the engine's plan vocabulary may grow.
- Only the matched keyword run carries the category colour;
connectors, prefixes and table / index names stay neutral
(ADR-0028 §6). The display-SQL line is wholly neutral.
- An automatic-index node also gets the distinct "← add an
index?" advice tag, so it reads as guidance, not merely
"this is slow".
1158 tests pass (+7); clippy clean.
Add the `explain` prefix command — `explain show data`,
`explain update`, `explain delete` — from grammar through to a
rendered plan tree.
- Grammar: an `EXPLAIN` CommandNode whose shape is a Choice over
the three explainable query shapes, referenced (not
duplicated) through `Subgrammar`. `Command::Explain { query:
Box<Self> }`; `build_show_data` is extracted so the role-based
builders serve both standalone and explain-wrapped commands.
- Worker: SQL construction is split out of do_query_data /
do_update / do_delete into `build_*_sql`, so EXPLAIN QUERY
PLAN runs the exact same statement. `Request::ExplainPlan` /
`do_explain_plan` capture the plan; `QueryPlan` / `ExplainRow`
carry it back. EXPLAIN QUERY PLAN never executes, so
explaining update/delete changes nothing.
- Display SQL: the executed statement with `?N` parameters
inlined as standard-SQL literals via a quote-aware scan.
- Render: `render_explain_plan` draws the box-drawing plan tree
(plain output; ADR-0028 step 4 adds the styled tree).
- Catalog: `parse.usage.explain` and the `help.data.explain`
entry, so `explain` shows up in the in-app `help` listing.
1151 tests pass (+18); clippy clean.
Implement ADR-0025 — indexes as a DSL DDL feature.
- Grammar: `add index [as <name>] on <T> (<cols>)`, `drop index
<name>` / `drop index on <T> (<cols>)`, plus a `--cascade`
flag on `drop column`.
- db.rs: index operations over the engine's native index
catalog (no metadata table). The rebuild-table primitive now
captures and recreates indexes, so `change column` and the
relationship operations no longer silently drop them.
- `drop column` refuses an indexed column unless `--cascade`,
which drops the covering indexes and reports each.
- Persistence: additive `indexes:` list in `project.yaml`
(version unchanged); round-trips through rebuild/export/import.
- Display: an `Indexes:` section in the structure view and a
nested tables/indexes items panel (S2).
Reconciles requirements.md (C3 index portion, S2 satisfied)
and CLAUDE.md. 1038 tests passing (+31), clippy clean.
Replaces the placeholder "trust STRICT" body of do_change_column_type
with the per-cell transformer matrix from ADR-0017. Adds:
- src/type_change.rs: CellOutcome { Clean / Lossy / Incompatible }
+ transform_cell + static_refusal covering every matrix pair
from §3 (54 unit tests).
- --force-conversion and --dont-convert flags on `change column`
(mutually exclusive at parse time per §5).
- Refined PK rule (§4.1): refused only when the column has an
inbound FK and fk_target_type would change. Outbound-FK columns
still refused outright (§4.2). PK / shortid uniqueness checked
post-transformation (§4.3).
- Bordered diagnostic tables (lossy / incompatible / collision)
via the pretty-table renderer (§7) — uses ADR-0016's primitives.
- [client-side] success note (§6) when any cell was rewritten.
- Friendly wrapper for engine-level errors under --dont-convert
so no engine vocabulary leaks (ADR-0002 user-facing posture).
ADR-0017 §3 + §7 amended in place (with user sign-off): serial->int
added explicitly to the always-clean matrix, and diagnostic rows
identify themselves by PK value(s) rather than positional indices
(SQLite returns rows unordered without ORDER BY, so positional
"row 5" is unaddressable).
Tests: 449 -> 517 (+68). Clippy clean with nursery lints.
Replaces the placeholder pipe-and-dash output with Unicode
box-drawing tables for both data results and table-structure
listings, per ADR-0016.
* New `src/output_render.rs` module with `render_data_table`
and `render_structure`. Hand-rolled to match the project's
existing CSV/YAML pattern; ~300 lines.
* Header-only outer-frame border style: outer ┌─┐│└─┘ box +
├─┤ header underline, no per-row separators. NULL renders
as `(null)`; cell newlines/tabs/control chars become
`↵`/`→`/`·` as display-only substitutions.
* Type-aware column alignment: numeric types right-aligned,
everything else left. `DataResult` gains a `column_types:
Vec<Option<Type>>` field, populated from the existing
metadata lookup at the two query sites in db.rs (no new
query paths).
* Structure view shows Name | Type | Constraints columns;
References / Referenced-by sections retain plain-text
format, leaving room for the future relationship-rendering
ADR.
* 18 new unit tests in output_render.rs (plus 4 insta
snapshots for the canonical layouts). Existing assertions
in app.rs and walking_skeleton.rs updated to match the new
format.
Total: 426 passing, 0 failing, 0 skipped (up from 408).
Clippy clean.
claude@clouddev1