v0.2.0

[0.2.0] - 2026-06-12

Features

• sql: Bind FOR VALID_TIME AS OF onto the bound plan (STL-162) (#78)
• exec: Vectorized operator framework — batch-at-a-time pull pipeline (STL-169) (#77)
• engine: Multi-statement BEGIN/COMMIT/ROLLBACK through pgwire (STL-174) (#79)
• pgwire: Extended-query protocol + prepared-statement cache (STL-182) (#80)
• exec: Both-axes (system + valid) version resolution in SnapshotScan (STL-163) (#81)
• storage: Distinguish empty/absent zone-map bounds for bytes columns (STL-120) (#82)
• engine: Honor SELECT projection + WHERE via a row codec (STL-151) (#83)
• sql: SQL:2011 period predicates over half-open intervals (STL-165) (#86)
• engine: Route bitemporal AS OF (sys + valid) through SessionEngine + pgwire (STL-164) (#85)
• sql: Portable hash-key function + published byte-spec (STL-179) (#90)
• types: First-class PERIOD type backing system/valid time (STL-180) (#87)
• storage: Checkpoint flushes delta tier to sealed segments + bounds recovery replay (STL-177) (#92)
• txn: Verify the commit-log hash chain on recovery + tamper-evidence test (STL-178) (#88)
• sql: TIMESTAMPTZ UTC-internal + half-open boundary semantics (STL-189) (#91)
• types: Add UUID + BYTEA scalar types with wire text encoders (STL-181) (#89)
• exec: Row-group-scoped late materialization in SnapshotScan (STL-155) (#96)
• cli: Interactive query shell over pg-wire (STL-185) (#95)
• cli: Datum-brand shell visual design + psql-parity meta-commands (STL-198) (#97)
• engine: Savepoints (SAVEPOINT / ROLLBACK TO / RELEASE) over multi-statement txns (STL-176) (#98)
• exec: Vectorized scalar expression evaluator + Filter operator (STL-170) (#99)
• engine: Snapshot isolation across multi-statement transactions (STL-175) (#100)
• exec: Wire vectorized Filter onto the live SELECT path (STL-206) (#102)
• exec: Zone-map row-group block skipping in the vectorized scan (STL-173) (#103)
• exec: Hash GROUP BY + aggregates (COUNT/SUM/MIN/MAX/AVG) (STL-171) (#104)
• exec: AVG returns a true fractional FLOAT8 average (STL-209) (#105)
• exec: Hash join operators — inner/left/semi/anti (STL-172) (#106)
• engine: Durable catalog log + SessionEngine cold-boot recovery (STL-210) (#107)
• exec: Vectorized evaluator — temporal/uuid/bytea/period types + div/mod (STL-207) (#108)
• pgwire: Binary-format encoders + format-code negotiation (STL-183) (#109)
• exec: Zero-copy shared-buffer Column for batch slicing + projection (STL-191) (#110)
• engine: Crash-atomic group commit — one WAL record + one fsync per COMMIT (STL-192) (#111)
• sql: Per-row period predicates over value columns (STL-193) (#112)
• sql: Write valid-time intervals through INSERT/UPDATE (STL-194) (#113)
• engine: Drive storage flush/checkpoint from SessionEngine (STL-195) (#115)
• cli: ⇥ completion from the live catalog + persisted shell history (STL-202) (#116)
• sql: Operator-facing CHECKPOINT/FLUSH admin command over pgwire (STL-219) (#118)
• storage: Bound Engine::flush row-groups so scans benefit from late materialization (STL-197) (#119)
• engine: Prune the MVCC write index below the oldest live snapshot (STL-204) (#120)
• engine: Read-your-own-writes — overlay buffered txn writes on snapshot reads (STL-203) (#121)
• pgwire: ROLLBACK TO SAVEPOINT recovers an aborted transaction (STL-205) (#122)
• pgwire: Statement-level RowDescription on Describe (STL-212) (#123)
• sql: Emit Div/Mod, new-type comparisons, and per-row PERIOD on the live WHERE path (STL-213) (#124)
• engine: Cross-table crash-atomic commit via per-transaction commit marker (STL-215) (#126)
• exec: Zero-copy Filter row selection via selection-vector batches (STL-214) (#125)
• storage: Poison the WAL on an fsync failure (STL-217) (#129)
• storage: Roll back an aborted group commit's in-memory writes (STL-216) (#130)
• cli: Adopt rustyline with-file-history for shell history (STL-221) (#136)
• engine: Valid-time read-your-own-writes overlay (STL-223) (#139)
• sql,cli: Varchar-family column types, civil-time DML literals, shell timing trailer (#140)
• storage,ci: Portable positioned-read backend + Windows CI leg (STL-160) (#143)

Bug Fixes

• exec: Strip the valid-time frame on a no-pin read (STL-218) (#114)
• engine: Close the dropped era's rows at DROP TABLE (STL-211) (#117)
• engine: Re-derive a dropped era's storage closes at recovery (STL-220) (#132)
• pgwire: Reject extended Bind with a mismatched parameter count (STL-222) (#131)
• engine: Read a valid-time UPDATE's prior version bare across tiers (STL-226) (#137)
• engine: Observe the clock for fresh read snapshots so AS OF now() tracks idle time (STL-227) (#144)

Performance

• exec: Zero-copy selection-vector join output gather (STL-224) (#138)

Documentation

• adr: ADR-0027 vectorized execution model (STL-188) (#93)
• config: Add a sample stele.toml for operators (STL-208) (#101)

Testing

• exec: Prove bitemporal DML deletion-gap survives index rebuild (STL-166) (#84)
• storage: Sealed-segment immutability oracle (STL-186) (#94)
• sim: Snapshot-isolation + provenance correctness oracle (STL-168) (#133)
• oracle: SQL-path bitemporal AS OF (sys, valid) DuckDB differential (STL-167) (#135)
• ci: JDBC + psycopg parameterized-query driver gate (STL-184) (#141)
• sim: Vectorized-exec + mixed commit/rollback txn scenarios under fault injection (STL-187) (#142)

Build System

• Bump toml from 0.8.23 to 1.1.2+spec-1.1.0 (#127)
• Bump workspace MSRV + pinned toolchain to Rust 1.89.0 (STL-225) (#134)

CI/CD

• Bump taiki-e/install-action from 2.81.4 to 2.81.10 (#128)

v0.1.0

[0.1.0] - 2026-06-08

Features

• storage: Append-only WAL with group-commit fsync and CRC records (STL-86) (#8)
• storage: Delta tier with row-oriented store and disk spill (STL-87) (#11)
• storage: Sealed segment file format (STL-88) (#12)
• storage: Segment zone maps for planner pruning (STL-89) (#13)
• storage: Pluggable backend trait with local + in-memory impls (STL-90) (#14)
• storage: System-time version writer with close-prior-period (STL-91) (#15)
• storage: Per-table valid-time opt-in (STL-92) (#17)
• storage: Inline provenance columns on every written version (STL-93) (#18)
• storage: Bounded-prefix zone-map stats for large bytes columns (STL-115) (#19)
• storage: Wire stele.toml [storage] backend selection (STL-116) (#20)
• storage: Valid_from/valid_to segment columns for zone-map pruning (STL-117) (#21)
• storage: Record delete/tombstone provenance on period-close (STL-118) (#22)
• storage: Store bare payload in valid-time segments, reframe on read (STL-119) (#23)
• storage: DML insert/update/delete through WAL → delta tier (STL-94) (#24)
• storage: Close a sealed open version via an appended close marker (STL-127) (#25)
• types: Essential scalar + temporal type set (STL-96) (#26)
• query: SQL parser bootstrap + temporal grammar (STL-97) (#27)
• catalog: Versioned schema resolution at a system-time snapshot (STL-98) (#28)
• query: Bind CREATE TABLE / DROP TABLE DDL to the catalog (STL-95) (#31)
• txn: MVCC snapshot acquisition + commit-time assignment (STL-99) (#32)
• storage: Derived validity index — sys_to off the record (STL-133) (#33)
• txn: Per-commit seq + hash-chained commit log (STL-137) (#37)
• storage: Persist retractions; rebuild validity index from segments (STL-143) (#38)
• storage: Validity-index–backed segment prune (STL-139) (#39)
• storage: Thread a real SealedLookup through the valid-time / DML staging path (STL-140) (#43)
• storage: Carry per-commit seq on the version record (STL-141) (#44)
• storage: Order per-key chains by (sys_from, seq); drop the sys_from force-bump (STL-145) (#46)
• exec: SnapshotScan merges delta tier + sealed segments (STL-100) (#45)
• sql: Bind SELECT … FOR SYSTEM_TIME AS OF into a snapshot-scan plan (STL-101) (#48)
• storage: Crash-recovery driver — segment checksum + WAL replay from checkpoint (STL-102) (#49)
• pgwire: Simple-query Q-loop result protocol + SELECT 1 (STL-104) (#50)
• pgwire: Per-type text encoders for the v0.1 scalar set (STL-105) (#51)
• engine: Server-session engine — Catalog + commit clock + per-table tiers (STL-148) (#52)
• pgwire: Route CREATE/DROP TABLE DDL + minimal pg_catalog \d shim (STL-131) (#53)
• sql: Bind INSERT/UPDATE/DELETE into a BoundDml the engine applies (STL-149) (#54)
• pgwire: Route table SELECT + INSERT/UPDATE/DELETE through the simple-query loop (STL-147) (#55)
• cli: Stele version reports the build git commit (STL-106) (#57)
• server: STELE_LOG_FORMAT=json toggle + document logging baseline (STL-107) (#56)
• stele-sim: Seeded fault-injecting virtual disk (STL-109) (#58)
• sim: Virtual clock + ChaCha20 RNG + cooperative scheduler (STL-108) (#59)
• stele-sim: AS OF result-equivalence oracle vs in-memory reference (STL-111) (#61)
• stele-sim: Scenario registry — sweep many, replay one (STL-110) (#60)
• exec: SnapshotScan late materialization + validity-index segment prune (STL-146) (#63)
• pgwire: Report bound local_addr to kill the reserve-drop port race (STL-152) (#65)
• pgwire: End-to-end SQL NULL cell over the table-read path (STL-154) (#67)

Bug Fixes

• ci: Run nightly sanitizers under +nightly toolchain (#30)

Performance

• storage: Prune validity-index spill reads on point/small lookups (STL-142) (#42)

Testing

• pgwire: Cover SSL/GSS N-refusal + server-boot probe (STL-103) (#29)
• storage: Valid-axis zone-map oracle + sys_to migration note (STL-134) (#34)
• storage: Read-path & recovery AS-OF correctness oracle (STL-136) (#35)
• storage: Differential oracle for the validity-index close write path (STL-135) (#36)
• storage: Bitemporal AS-OF reference oracle + metamorphic checks (STL-138) (#40)
• pgwire: Psql-golden wire text-encoder round-trip (STL-150) (#62)
• stele-exec: DuckDB differential oracle for bitemporal AS OF (STL-144) (#64)
• sim: Drive crash-recovery sweeps under FaultDisk injection (STL-153) (#66)

Build System

• Bump thiserror from 1.0.69 to 2.0.18 (#3)

CI/CD

• Bump actions/checkout from 4 to 6 (#2)
• Enforce Conventional Commits on PR titles (STL-85) (#5)
• Enable CodeQL static analysis for Rust + Actions (STL-113) (#6)
• Pin GITHUB_TOKEN to least-privilege on ci + nightly workflows (STL-114) (#7)
• Bump github/codeql-action from 4.36.1 to 4.36.2 (#10)
• Bump taiki-e/install-action from 2.81.3 to 2.81.4 (#9)
• Pin rust-toolchain to 1.85.0 instead of stable (#41)
• nightly: Fix sanitizer matrix — build-std for ABI, drop invalid UBSan (#47)
• Add Docker image + five-minute-path identity-demo smoke gate (STL-112) (#68)
• release: Add tag-driven release pipeline (STL-121) (#69)
• release: Merge per-crate CycloneDX BOMs into one workspace SBOM (STL-156) (#70)
• release: Add SLSA build provenance attestation (STL-157) (#71)
• Isolate the DuckDB differential oracle off the per-PR path (STL-158) (#73)
• release: Drop the untested Windows target from the release matrix (STL-159) (#74)
• release: Migrate retired macos-13 Intel runner to macos-15-intel (STL-161) (#75)
• release: Pin cosign to v2.6.3 so sign-blob keeps working (STL-190) (#76)