- Add `Backup.Remaining` and `Backup.PageCount`, thin wrappers around the existing `sqlite3_backup_remaining` and `sqlite3_backup_pagecount` C symbols. Together they expose the per-`Step` progress counters that the underlying backup object already maintains, enabling progress reporting during online backups without dropping to `modernc.org/sqlite/lib` directly.
- See [GitLab merge request #122](https://gitlab.com/cznic/sqlite/-/merge_requests/122), thanks Ian Chechin!
- Drop the redundant second copy in `(*conn).columnText`, the path that backs every `Rows.Scan` into a Go `string` for a TEXT column. The value's bytes are still copied once out of SQLite-owned memory into a fresh Go buffer; that buffer is then reinterpreted as the result string with `unsafe.String` rather than copied a second time by the implicit `string([]byte)` conversion. This removes one allocation per TEXT value per row and roughly halves the bytes allocated on that path; on the new `BenchmarkColumnTextScan` cases it is ~13–20% faster for payloads of 256 B and larger, with no measurable change for very short strings. Purely internal: no API or behavioral change, and the returned string never aliases SQLite's buffer.
- See [GitLab merge request #123](https://gitlab.com/cznic/sqlite/-/merge_requests/123), thanks Ian Chechin!
- 2026-05-28 v1.51.0:
- Pool the `[]driver.Value` slice passed to scalar/aggregate UDF callbacks and to vtab `Filter`/`Insert`/`Update` callbacks, eliminating the dominant per-row allocation on UDF-heavy queries. Benchmarks on a 1000-row, 3-arg noop scalar UDF show ~40% fewer bytes/op and ~15% fewer allocs/op.
Claude Opus 4.8 (1M context) <noreply@anthropic.com>