claude@clouddev1
942222bfc9
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.
Architecture Decision Records
This directory contains the project's ADRs, recorded per ADR-0000.
Index
- ADR-0000 — Record architecture decisions
- ADR-0001 — Language and TUI framework
- ADR-0002 — Database engine
- ADR-0003 — Input modes and command dispatch
- ADR-0004 — Project file format
- ADR-0005 — Column type vocabulary
- ADR-0006 — Undo snapshots and replay log
- ADR-0007 — Sharing and export
- ADR-0008 — Testing approach
- ADR-0009 — DSL command syntax conventions
- ADR-0010 — Database access via a dedicated worker thread
- ADR-0011 — Foreign-key column type compatibility
- ADR-0012 — Internal metadata for user-facing column types
- ADR-0013 — Relationships, naming, and the rebuild-table strategy
- ADR-0014 — Data operations, value literals, and the auto-show pattern
- ADR-0015 — Project storage runtime
- ADR-0016 — Pretty table rendering for data and structure views
- ADR-0017 — Column type-change compatibility
- ADR-0018 — Auto-fill contracts for
serialandshortidcolumns - ADR-0019 — Friendly error layer (H1) and i18n message catalog
- ADR-0020 — Tokenization layer for the DSL parser
- ADR-0021 — Parser-as-source-of-truth for H1a (per-command usage in parse errors)
- ADR-0022 — Ambient typing assistance: colour, hint panel, completion (I3 + I4)
- ADR-0023 — Unified declarative grammar tree — direction (superseded for execution detail by ADR-0024)
- ADR-0024 — Unified grammar tree: execution plan — Accepted, the executable spec — implemented (Phases A–F; Phase F shipped "minimal",
parser.rsretained as the router — see the ADR's Phase F implementation note) - ADR-0025 — Indexes — Accepted,
add index/drop index, persistence, rebuild-table preservation, and items-list display (C3index portion +S2) - ADR-0026 — Complex WHERE expressions — Accepted, stratified recursive expression grammar (
AND/OR/NOT, comparisons,LIKE,IS NULL,IN,BETWEEN) forupdate/delete/show datafilters;show datagainswhere+limit; adds theSubgrammarnode and a recursiveExprAST (C5a) - ADR-0027 — Input-field validity indicator — Accepted, a debounced
[ERR]/[WRN]marker at the input row's right edge, backed by a walker diagnostics-severity model (parse-outcome + schema-existence); advisory, never blocks submission (S6); Amendment 1 adds aLIKE-on-numeric-column WARNING - ADR-0028 — Query plans (
EXPLAIN QUERY PLAN) — Accepted, anexplainprefix command overshow data/update/delete; an annotated, span-styled plan tree; introduces theOutputLinestyled-runs mechanism (ADR-0016's deferred per-span styling) (QA1/QA2) - ADR-0029 — Column constraints (NOT NULL / UNIQUE / CHECK / DEFAULT) — Accepted, the four column-level constraints declared in the column-spec suffix (
create table/add column) and modified on existing columns viaadd constraint …/drop constraint …; a pre-flight dry-run guards populated columns;CHECKreuses the ADR-0026 expression grammar viaSubgrammar(C3)