[#220] feat: auto-create composite primary-key indexes - #272
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- CREATE TABLE에서 테이블 레벨 'PRIMARY KEY (col, ...)' 제약 파싱 지원 - 인라인 PK와 테이블 레벨 PK 동시 지정 시 에러 - 테이블 레벨 PK가 정의되지 않은 컬럼 참조 시 에러 - 빈 컬럼 리스트/괄호 누락 등 malformed 입력 에러 처리 - CreateTableQuery.primary_key 필드가 실제 SQL 텍스트에서 채워짐
- IndexMeta에 columns: Vec<String> 추가 (new_composite 생성자) - column_name()/columns()/is_composite() 접근자로 하위 호환 유지 - encode_composite_key_component: 길이 프리픽스 인코딩으로 컴포넌트 경계 모호성 제거 (S:ab+S:c vs S:a+S:bc 충돌 방지) - row_index_keys: 복수 컬럼 키 계산 (NULL/미정의 컬럼 포함 시 색인 제외) - join_composite_key: 컴포넌트 -> B-tree 단일 키 조합
- create_table이 복합 PK 테이블에 {table}_pkey 인덱스를 자동 생성
(기존 '단일 컬럼만' TODO 제거)
- insert/update/delete 유지보수 경로를 복합 키 계산으로 전환
(row_index_keys + join_composite_key)
- 단일 컬럼 인덱스는 join 결과가 field_to_key와 동일 — 기존 키 공간과
옵티마이저 eq_key/start_key/end_key 정합성 유지
- 복합 키 B-tree 키: 길이 프리픽스 인코딩으로 컴포넌트 경계 단사성 보장
- 통합 테스트 6개: 자동 생성/중복 조합 거부/배치 중복/조회 정확성/
update-delete 유지보수/재기동 복구/orphan row 없음
…he optimizer 복합 인덱스의 저장 키는 길이 프리픽스 조합이라 단일 컬럼 raw field_to_key 경계와 매칭되지 않음. 옵티마이저가 복합 인덱스를 IndexScan으로 선택하면 조건을 만족하는 행을 전부 누락하는 잘못된 결과를 냄 (1000행 테이블 probe로 재현: user_id=42 → 0행). prefix 스캔이 구현되기 전까지 복합 인덱스는 FullScan으로 폴백 (안전 우선). 큰 테이블 회귀 테스트 추가.
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Walkthrough테이블 레벨 복합 Changes복합 PRIMARY KEY 지원
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to Composite primary-key support adds filesystem cleanup through the public FileSystem interface. Existing external FileSystem implementations may require a source update before they can build against this release. Sequence Diagram(s)sequenceDiagram
participant SQL
participant Parser
participant CreateTable
participant IndexMeta
participant DML
SQL->>Parser: CREATE TABLE with PRIMARY KEY
Parser->>CreateTable: primary_key_columns 전달
CreateTable->>IndexMeta: new_composite 호출
DML->>IndexMeta: columns 조회
DML->>DML: row_index_keys 및 join_composite_key 실행
DML-->>SQL: 복합 인덱스 처리 결과 반환
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✅ Passed checks (4 passed)
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Inline comments:
In `@src/engine/actions/ddl/create_table.rs`:
- Line 79: Update the cleanup path in the create-table operation to call the
asynchronous directory-removal method on self.file_system instead of
tokio::fs::remove_dir_all, preserving the existing best-effort error handling
and enabling mock filesystem control in tests.
In `@src/engine/actions/test_composite_pk_e2e.rs`:
- Line 27: Update the base_path existence check around Path::exists to use
Tokio’s asynchronous filesystem API, await the result, and preserve the existing
conditional behavior.
In `@src/engine/parser/implements/ddl/table.rs`:
- Around line 101-105: Update the PRIMARY KEY column-list parsing around the
current_token match to track whether an identifier or comma is expected,
rejecting leading, consecutive, and trailing commas while preserving valid
alternating identifier/comma syntax. Ensure a RightParentheses is accepted only
after an identifier and return a parse error for invalid ordering.
- Line 175: 테이블 수준 PRIMARY KEY 처리 경로의 조기 반환 직전에 문장 종료 토큰 검증을 추가하십시오. 일반 CREATE
TABLE 경로와 동일하게 EOF 또는 세미콜론만 허용하고, 그 외 토큰은 거부한 뒤 검증이 완료되면 query를 반환하도록 해당 return
Ok(query) 흐름을 수정하십시오.
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src/engine/actions/ddl/create_table.rssrc/engine/actions/dml/delete.rssrc/engine/actions/dml/insert.rssrc/engine/actions/dml/update.rssrc/engine/actions/index.rssrc/engine/actions/mod.rssrc/engine/actions/test_composite_index.rssrc/engine/actions/test_composite_pk_e2e.rssrc/engine/index/mod.rssrc/engine/optimizer/optimizer.rssrc/engine/parser/implements/ddl/table.rssrc/engine/parser/test/create_table.rs
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- create_table: 정리 경로를 FileSystem 트레이트로 추상화 (remove_dir_all을 FileSystem에 추가, tokio::fs 직접 호출 제거) - parser: PRIMARY KEY 목록의 쉼표 문법 검증 ((,a), (a,), (a,,b), (a b) 거부 — 식별자/쉼표 교대 강제) - parser: 테이블 레벨 PK 경로에도 문장 종료 검증 적용 (PK 뒤 이상한 토큰 시 에러, 세미콜론 없는 EOF는 허용) - e2e 테스트: 동기 Path::exists() 제거 (비동기 remove_dir_all로 정리) - 신규 파서 테스트 3개 (쉼표 문법/후행 토큰/EOF 종료)
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CodeRabbit fix summary (commit 3bcd53b)
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Inline comments:
In `@src/common/fs.rs`:
- Around line 23-25: Update the FileSystem trait’s remove_dir_all method to
provide a default implementation so existing external implementations remain
source-compatible; preserve the recursive directory-removal behavior and its
io::Result<()> contract, using the existing filesystem abstraction rather than
requiring every implementer to add the method.
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src/common/fs.rssrc/engine/actions/ddl/create_table.rssrc/engine/actions/test_composite_pk_e2e.rssrc/engine/parser/implements/ddl/table.rssrc/engine/parser/test/create_table.rs
🚧 Files skipped from review as they are similar to previous changes (4)
- src/engine/actions/test_composite_pk_e2e.rs
- src/engine/actions/ddl/create_table.rs
- src/engine/parser/implements/ddl/table.rs
- src/engine/parser/test/create_table.rs
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…_all FileSystem 트레이트가 pub이므로 필수 메서드 추가는 외부 구현체를 깨는 breaking change (CodeRabbit 지적). default 구현을 제공해 기존 구현체의 소스 호환성을 유지. RealFileSystem은 default를 재사용.
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CodeRabbit fix summary — round 2 (commit 05530d5)
Note: the default body is exactly what Verification: full |
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Closes #220
Summary
Follow-up to #218 (single-column PK auto-index): this implements composite primary keys end to end — table-level
PRIMARY KEY (a, b)syntax, composite index metadata, length-prefixed composite key encoding, and automatic composite{table}_pkeyindex creation with full DML maintenance.Changes
1. Parser: table-level PRIMARY KEY constraint (d721656)
create table t (a int, b int, primary key (a, b));now parses.CreateTableQuery.primary_key: Vec<String>existed in the AST but was never populated from SQL.PRIMARY KEY (col [, ...])as a table-level constraint2. Index core: composite metadata + key encoding (9e85f7a)
IndexMetagainscolumns: Vec<String>+new_composite()(withcolumn_name()kept as the first column for compatibility)join_composite_key(): single component passes through unchanged (preserves the existing key space shared with the optimizer'seq_key/start_key/end_key); multiple components get a 6-digit length prefix each, soS:ab + S:cvsS:a + S:bccannot colliderow_index_keys(): NULL/missing column in any indexed column → row not indexed (same as single-column semantics)3. Auto-creation + DML maintenance + optimizer safety (3816e02, 68f39fc)
create_tableauto-creates the composite*_pkeyindex whenever the PK is non-empty (waslen() == 1with a TODO)insert/update/deletemaintenance and insert pre-validation (unique rejection incl. batch) all switched to composite key computationeq_keylookup can never match them. Without this fix, a large table with a composite PK would return 0 rows forWHERE user_id = 42(verified: 1000-row probe returned 0). Composite indexes are now excluded from IndexScan candidates and fall back to FullScan until per-column prefix scans land; correctness first. Regression test added.4. Integration tests (7)
auto-create metadata · duplicate combination rejection (single + batch) · lookup correctness (small + large table regression) · update/delete maintenance incl. unique violation via update · restart persistence · racing-insert orphan-row guard
Test results
cargo test: 847 passed, 0 failed (baseline before this PR: 803)cargo clippy --all-targets: warning set identical tomaster(no new warnings)Known limitations (explicit scope)
WHERE user_id = 1using the index) are not implemented — the optimizer falls back to FullScan for composite indexes. This is correctness-preserving and a natural follow-up.NOT NULL(pre-existing single-column behavior from feat: integrate BTree indexes and cost-based optimizer #218, matching rows-with-NULL-not-indexed semantics). InlinePRIMARY KEYdoes forceNOT NULL.Summary by CodeRabbit
새 기능
CREATE TABLE에서 단일 및 복합 테이블 수준PRIMARY KEY를 지원합니다.버그 수정