claude@clouddev1
9aa7e2ede0
The QA1/QA2 design: an `explain` prefix command over `show data` / `update` / `delete` that runs EXPLAIN QUERY PLAN (without executing the statement) and renders the result as an annotated tree. Plan steps keep the engine's own wording; an annotation taxonomy marks full scans, index use, and the automatic-index "you should add an index here" case. Introduces a general styled-output-line mechanism — an OutputLine may carry per-span styling — realising the per-span theming ADR-0016 deferred; the plan renderer is its first consumer. The explained SQL is shown above the tree as standard, copy-pasteable SQL. - docs/adr/0028-query-plans.md — the ADR. - docs/adr/README.md — index entry. - docs/requirements.md — QA2 [~] -> [ ]; QA1 note reconciled (designed in ADR-0028).
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- ADR-0023 — Unified declarative grammar tree — direction (superseded for execution detail by ADR-0024)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) - 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)