microsoft/mssql-rs

Repository for the TDS implementation in Rust.

Stars: 53
Forks: 14
Open beginner issues: 0
Indexed issues: 54
Avg merge: 1d 15h
Merged PRs (30d): 137

Dominant language: Rust
License: MIT
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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54 open issues indexed

Pin cross-repo mssql-python validation to a commit SHA; consider PR-based updates via GitHub Actions Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#605 · Opened Sep 19, 2026
Preserve unpaired UTF-16 code units in ODBC wide-character fetches Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/mssql-rs#604 · Opened Sep 19, 2026
Streamed parameter rebind leaks prepared handles and panics after repeated cancellation Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/mssql-rs#598 · 2 comments · Opened Sep 17, 2026
Automate minor version bumps for published Rust crates Open

microsoft/mssql-rs#596 · 1 assignee · Opened Sep 17, 2026
Reduce removable complexity identified by repository audit Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

microsoft/mssql-rs#588 · Opened Sep 17, 2026
Can PyCoreCursor.execute have a configurable timeout? Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

microsoft/mssql-rs#583 · 1 comment · Opened Sep 16, 2026
ODBC driver deadlocks in the child after POSIX fork() when the inherited HENV has a live connection Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#566 · Opened Sep 15, 2026
Unify SQL lexing between mssql-odbc and mssql-py-core Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#561 · Opened Sep 14, 2026
Preserve character output buffers when SQLGetData returns NULL binary values Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

microsoft/mssql-rs#555 · Opened Sep 10, 2026
mssql-odbc: SQL_ATTR_QUERY_TIMEOUT does not bound sp_unprepare on the SQLFreeHandle path Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 75/100

microsoft/mssql-rs#546 · Opened Sep 10, 2026
mssql-odbc: catalog unqualified retry caps the query-timeout budget at 1x where msodbcsql allows 2x Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/mssql-rs#547 · Opened Sep 10, 2026
Plumb per-row attribution through post_tds_error for SQL_DIAG_ROW_NUMBER Open

Difficulty 4/5 3-5 days Newbie friendliness 65/100

microsoft/mssql-rs#541 · Opened Sep 10, 2026
Verify decimal_from_numeric's precision_scale_explicit persistence across a same-C-type rebind against retail msodbcsql Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/mssql-rs#536 · Opened Sep 9, 2026
write/ benchmark scenario cannot fail the perf regression gate Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

microsoft/mssql-rs#534 · Opened Sep 9, 2026
Out-of-range temporal value on fetch returns SQLSTATE 07006 instead of msodbcsql's 22008 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 64/100

microsoft/mssql-rs#529 · Opened Sep 9, 2026
SQLGetData/SQLFetch of an out-of-range time silently truncates the hour and returns SQL_SUCCESS Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

microsoft/mssql-rs#526 · Opened Sep 9, 2026
mssql-odbc: SQLGetData PLP drain-only calls still run the wire-read path Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 68/100

microsoft/mssql-rs#513 · 1 comment · Opened Sep 7, 2026
mssql-odbc: single-row bound fetch regressed ~17% against the pinned perf baseline Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

microsoft/mssql-rs#507 · Opened Sep 6, 2026
Build a feedback loop that improves the code-review skill from review outcomes Open

skill:code-review

Difficulty 4/5 3-5 days Newbie friendliness 68/100

microsoft/mssql-rs#496 · Opened Sep 3, 2026
mssql-tds / mssql-odbc: infallible allocations behind the MAX_ALLOC_SIZE/MAX_PLP_SIZE caps abort the host process on allocation failure Open

bug

Difficulty 5/5 Over a week Newbie friendliness 38/100

microsoft/mssql-rs#484 · Opened Sep 2, 2026
Close the chunked MAX LOB wall-time gap to Microsoft ODBC via packet read-ahead Open

enhancement mssql-odbc performance

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#473 · Opened Sep 2, 2026
mssql-odbc: SQLSetDescRec/SQLSetDescFieldW can rewrite ARD/APD records mid-fetch with no STMT_STATE_FETCH_IN_PROGRESS guard Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

microsoft/mssql-rs#472 · Opened Sep 2, 2026
mssql-odbc: SQLBindCol/SQLBindParameter leave stale ARD/APD length/precision/scale behind on a differently-shaped rebind Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

microsoft/mssql-rs#470 · Opened Sep 2, 2026
Always Encrypted result metadata exposes ciphertext type instead of the decrypted column’s logical type Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

microsoft/mssql-rs#469 · Opened Sep 2, 2026
Command timeout is not enforced as a wall-clock deadline while TdsClient::advance() drains continuously available rows Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 64/100

microsoft/mssql-rs#468 · Opened Sep 2, 2026
Enforce the no-panics rule with clippy instead of prose Open

mssql-odbc

Difficulty 4/5 3-5 days Newbie friendliness 58/100

microsoft/mssql-rs#462 · 2 comments · Opened Sep 1, 2026
mssql-tds: no stale-on-failure DNS fallback (msodbcsql parity gap — a transient resolution failure fails the connect outright) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#457 · Opened Sep 1, 2026
mssql-tds: connection-pool warm-up issues redundant, uncached DNS resolutions for the same host Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#451 · 2 comments · Opened Sep 1, 2026
mssql-odbc: fully close the effective_ard/effective_apd use-after-free race against concurrent SQLFreeHandle(SQL_HANDLE_DESC) Open

mssql-odbc

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#441 · Opened Aug 31, 2026
mssql-odbc: invalidate cached prepared plan when descriptor-driven IPD/APD changes affect binding shape Open

mssql-odbc

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#440 · 1 comment · Opened Aug 31, 2026
perf-lab: auto-confirm quorum does not survive run-to-run VM variance, producing false confirmed regressions Open

performance

Difficulty 5/5 Over a week Newbie friendliness 45/100

microsoft/mssql-rs#434 · 1 comment · Opened Aug 31, 2026
mssql-odbc: instructions say "never recover a poisoned Mutex via into_inner()" but PR #415 has a justified exception Open

documentation mssql-odbc

Difficulty 1/5 Under an hour Newbie friendliness 88/100

microsoft/mssql-rs#430 · Opened Aug 31, 2026
mssql-odbc: LIVE_HANDLES stale-handle registry is vulnerable to address reuse (ABA) Open

bug mssql-odbc

microsoft/mssql-rs#422 · 1 assignee · Opened Aug 28, 2026
Upgrade dns-lookup dependency from v2 to v3 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/mssql-rs#398 · Opened Aug 27, 2026
Investigate cross-compiling the Windows ARM64 mock wheel from the x64 agent Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/mssql-rs#393 · Opened Aug 26, 2026
Sandbox publish pipeline requests 7 concurrent agents and starves the RUST pools Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

microsoft/mssql-rs#392 · Opened Aug 26, 2026
Harden TVP type name handling in mssql-tds instead of relying on per-binding validation Open

enhancement technical-debt

Difficulty 3/5 1-2 days Newbie friendliness 78/100

microsoft/mssql-rs#347 · Opened Aug 21, 2026
Reconcile xml type mapping between SQLDescribeCol (SQL_WLONGVARCHAR) and SQLDescribeParam (SQL_SS_XML) Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

microsoft/mssql-rs#337 · Opened Aug 19, 2026
SqlString::to_utf8_string panics on malformed UTF-8 from the server Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

microsoft/mssql-rs#310 · Opened Aug 15, 2026
Skip the per-row `Instant::now()` when no request timeout is set (row decode perf, axis: precomputation) Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 58/100

microsoft/mssql-rs#297 · Opened Aug 14, 2026
Add exhaustive `decode`/`decode_into` behavior-parity tests Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 62/100

microsoft/mssql-rs#289 · Opened Aug 14, 2026
mssql-tds: SQL_VARIANT narrows a u32 data length to u8, desynchronizing the token stream Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

microsoft/mssql-rs#280 · Opened Aug 13, 2026
mssql-js: neither `yarn lint` nor `yarn format:check` runs in CI Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

microsoft/mssql-rs#267 · Opened Aug 13, 2026
Cleanups surfaced by row decode perf work (PLP validation, cfg-gated duplication, sentinels) Open

tech-debt

Difficulty 4/5 3-5 days Newbie friendliness 45/100

microsoft/mssql-rs#258 · 2 comments · Opened Aug 13, 2026
Remove per-row tracing overhead (`#[instrument]` + hot-path logs) (row decode perf, axis: precomputation) Open

enhancement performance

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

microsoft/mssql-rs#256 · 1 comment · Opened Aug 13, 2026
Add `RowWriter` sink API so consumers receive string/binary payloads without `mssql-tds` allocating (row decode perf, axis: value handoff) Open

enhancement performance

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#253 · 9 comments · Opened Aug 13, 2026
Row decode performance: productionize PoC #238 across four axes (tracking) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/mssql-rs#247 · 5 comments · Opened Aug 13, 2026
Bulk copy: destination table name is not quoted in the INSERT BULK command (column names are) Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

microsoft/mssql-rs#216 · 1 comment · Opened Aug 11, 2026
mssql-odbc: fetch path is significantly slower than msodbcsql18 Open

performance

Difficulty 4/5 3-5 days Newbie friendliness 38/100

microsoft/mssql-rs#185 · Opened Aug 8, 2026
Retain a rollback tag for pre-built Kerberos test images instead of only overwriting `latest` Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/mssql-rs#180 · Opened Aug 6, 2026

A short digest of beginner-friendly GitHub issues.