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)