Issues

• ExpandRel: proto allows NULL-filling short switching fields, docs require equal duplicate counts

  substrait-io/substrait#1271 · Filter by author nielspardon opened on Oct 6, 2026

• Does LambdaParameterReference.steps_out cross a subquery boundary?

  substrait-io/substrait#1270 · Filter by author nielspardon opened on Oct 6, 2026

• spec: meaning of the legacy window offset for RANGE over non-i64 orderings

  substrait-io/substrait#1268 · Filter by author nielspardon opened on Oct 6, 2026

• spec: must window functions with identical partitioning and ordering see the same tie order?

  substrait-io/substrait#1267 · Filter by author nielspardon opened on Oct 6, 2026

• spec: undefined offset_expr edge cases (null ordering vs invalid offset, zero offset)

  substrait-io/substrait#1266 · Filter by author nielspardon opened on Oct 6, 2026

• docs: Consistent Partition Window operation claims it maintains ordering

  substrait-io/substrait#1265 · Filter by author nielspardon opened on Oct 6, 2026

• spec: say which window functions ignore frame bounds

  substrait-io/substrait#1264 · Filter by author nielspardon opened on Oct 6, 2026

• Dependency Dashboard

  substrait-io/substrait#1251 · Filter by author renovate opened on Sep 30, 2026

• filter/all_match/any_match reject predicates whose body is non-nullable

  substrait-io/substrait#1248 · Filter by author nielspardon opened on Sep 30, 2026

• tests: test group descriptions are never parsed

  substrait-io/substrait#1245 · Filter by author nielspardon opened on Sep 28, 2026

• tests: parser negative tests pass for the wrong reasons

  substrait-io/substrait#1244 · Filter by author nielspardon opened on Sep 28, 2026

• tests: assert parsed options and <!ERROR> results in the parser tests

  substrait-io/substrait#1243 · Filter by author nielspardon opened on Sep 28, 2026

• tests: unify the extensions path and cache the registry in test_coverage.py

  substrait-io/substrait#1242 · Filter by author nielspardon opened on Sep 28, 2026

• tests: parse_stream accepts lexer errors and prints parse trees on syntax errors

  substrait-io/substrait#1241 · Filter by author nielspardon opened on Sep 28, 2026

• docs: format data types in generated extension pages

  substrait-io/substrait#1240 · Filter by author benbellick opened on Sep 25, 2026

• What does an UpdateRel output?

  substrait-io/substrait#1232 · Filter by author alexandrefimov opened on Sep 23, 2026

• Mask unwrapping: the prose defines two rules, the proto opts out of one, and the proto comment says unwrapping does not happen

  substrait-io/substrait#1230 · Filter by author nielspardon opened on Sep 22, 2026

• Is add(T, D) -> T meant literally as the RANGE offset_expr compatibility rule?

  substrait-io/substrait#1227 · Filter by author nielspardon opened on Sep 21, 2026
  2

• docs: offset_expr RANGE rule still cites timestamp, removed in v0.88.0

  substrait-io/substrait#1226 · Filter by author nielspardon opened on Sep 21, 2026

• A ReadRel projection mask listed out of schema order: DuckDB writes one, the spec says a mask only removes fields

  substrait-io/substrait#1225 · Filter by author alexandrefimov opened on Sep 19, 2026

• Decimal arithmetic drops fractional digits above precision 38 and does not say how

  substrait-io/substrait#1224 · Filter by author alexandrefimov opened on Sep 17, 2026

• Support a plan-level function definition in a plan

  substrait-io/substrait#1220 · Filter by author yongchul opened on Sep 15, 2026
  

• The Decimal Division example derives a precision divide does not, and has no upper bound

  substrait-io/substrait#1216 · Filter by author alexandrefimov opened on Sep 10, 2026

• avg over integral types declares an integer return, but engines return a float

  substrait-io/substrait#1210 · Filter by author alexandrefimov opened on Sep 2, 2026

• the lower bound on FIXEDCHAR/VARCHAR length is stated inconsistently, and a zero length is reachable from SQL

  substrait-io/substrait#1199 · Filter by author nielspardon opened on Sep 1, 2026
  3