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[Enh]: Add support for pyspark interval data types

dtypes

enhancementNew feature or requestNew feature or request

spark-like

Status: Open.

#3431 In narwhals-dev/narwhals;

· FBruzzesi opened on Jan 31, 2026

Support running <code>tpch</code> benchmarks at smaller scales

benchmarks

developer tools

internal

tpch

Status: Open.

#3423 In narwhals-dev/narwhals;

· dangotbanned opened on Jan 26, 2026

<code>_utils.normalize_path</code> can result in broken Windows paths for <code>sqlframe</code>

bug: it raises an error but shouldn't

sqlframeIssue is related to sqlframe backendIssue is related to sqlframe backend

Status: Open.

#3422 In narwhals-dev/narwhals;

· dangotbanned opened on Jan 25, 2026

Tracking: Adopt <code>ty</code> as an (additional) type checker

typing

upstream issue

Status: Open.

#3409 In narwhals-dev/narwhals;

· dangotbanned opened on Jan 21, 2026

[Enh]: Add support <code>{DataFrame, LazyFrame}.cast(...)</code>

enhancementNew feature or requestNew feature or request

needs discussion

needs info

Status: Open.

#3402 In narwhals-dev/narwhals;

· FBruzzesi opened on Jan 13, 2026

silence or override pandas warning about downcasting?

Status: Open.

#3394 In narwhals-dev/narwhals;

· MarcoGorelli opened on Jan 9, 2026

[Enh]: Add support for <code>concat(..., how={"vertical_relaxed", "diagonal_relaxed"})</code>

dtypes

enhancementNew feature or requestNew feature or request

Status: Open.

#3386 In narwhals-dev/narwhals;

· FBruzzesi opened on Jan 3, 2026

use protocols instead of optional 3rd party dependencies in public type annotations

typing

Status: Open.

#3374 In narwhals-dev/narwhals;

· MarcoGorelli opened on Dec 29, 2025

Add <code>{*Frame,Series,Expr}.drop_nans</code>

enhancementNew feature or requestNew feature or request

Status: Open.

#3366 In narwhals-dev/narwhals;

· dangotbanned opened on Dec 22, 2025

enh: add (optional) <code>order_by</code> to <code>rolling_*</code>, <code>cum_*</code>, <code>first</code>, ...

enhancementNew feature or requestNew feature or request

Status: Open.

#3363 In narwhals-dev/narwhals;

· MarcoGorelli opened on Dec 19, 2025

[Enh]: add LazyFrame.collect_batches

enhancementNew feature or requestNew feature or request

Status: Open.

#3360 In narwhals-dev/narwhals;

· danielgafni opened on Dec 18, 2025

[Enh]: Chain operations before .over() for LazyFrames

enhancementNew feature or requestNew feature or request

harder than it looks

Status: Open.

#3358 In narwhals-dev/narwhals;

· naive-forecaster opened on Dec 17, 2025