Issues

• Struct-valued expressions other than column() emit a single output name

  substrait-io/substrait-python#312 · Filter by author nielspardon opened on Oct 13, 2026
  1

• Raise typed exceptions instead of bare Exception

  substrait-io/substrait-python#310 · Filter by author nielspardon opened on Oct 13, 2026

• Overload chosen for a function name depends on the order extension YAMLs are read from disk

  substrait-io/substrait-python#303 · Filter by author nielspardon opened on Oct 13, 2026

• Dependency Dashboard

  substrait-io/substrait-python#302 · Filter by author renovate opened on Oct 13, 2026

• Update to Substrait v0.106.0

  substrait-io/substrait-python#298 · Filter by author substrait-project-bot opened on Oct 11, 2026

• Expr.map_key builds its key literal without regard to the map's key type

  substrait-io/substrait-python#295 · Filter by author nielspardon opened on Oct 8, 2026

• Emit offset_expr for window frame bounds

  substrait-io/substrait-python#291 · Filter by author nielspardon opened on Oct 5, 2026

• Update to Substrait v0.105.0

  substrait-io/substrait-python#287 · Filter by author substrait-project-bot opened on Oct 4, 2026

• builders.plan.aggregate accepts a grouping expression that no grouping set references

  substrait-io/substrait-python#282 · Filter by author nielspardon opened on Sep 28, 2026

• builders.plan.aggregate omits the grouping-set-id column from RelRoot.names, so a plan with more than one grouping set is invalid

  substrait-io/substrait-python#281 · Filter by author nielspardon opened on Sep 28, 2026

• infer_expression_type takes IfThen and SwitchExpression nullability from the first branch only

  substrait-io/substrait-python#277 · Filter by author nielspardon opened on Sep 22, 2026

• infer_rel_schema raises AttributeError on an unbound column: the nullability helpers assume every Type.kind has a nullability field

  substrait-io/substrait-python#276 · Filter by author nielspardon opened on Sep 22, 2026

• builders.plan.join and the physical equi-joins omit subtrees=, so a post_join_filter over a cached input raises

  substrait-io/substrait-python#275 · Filter by author nielspardon opened on Sep 22, 2026

• PlanPrinter mislabels field references when the schema has a nested field

  substrait-io/substrait-python#274 · Filter by author nielspardon opened on Sep 22, 2026

• narwhals_example.py fails on main: narwhals layer passes a YAML filename where a URN is expected

  substrait-io/substrait-python#262 · Filter by author nielspardon opened on Sep 2, 2026

• Un-aliased aggregate measures are all named IfThen(<operand>)

  substrait-io/substrait-python#261 · Filter by author nielspardon opened on Sep 2, 2026

• Customizing extension support across relations, expressions and types

  substrait-io/substrait-python#247 · Filter by author nielspardon opened on Aug 5, 2026

• Epic: consume Substrait spec test-case (.test) files — parse, map, and run conformance cases

  enhancement
  substrait-io/substrait-python#213 · Filter by author nielspardon opened on Jul 13, 2026

• Native DataFrame: revisit lazy vs. eager evaluation for eager error reporting

  substrait-io/substrait-python#212 · Filter by author nielspardon opened on Jul 13, 2026