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Support DISTINCT ORDER BY LIMIT query use GroupedTopKAggregateStream

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19638 In apache/datafusion;

· haohuaijin opened on Jan 4, 2026

Convert AVG(col) to SUM(x) / COUNT(*)

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19637 In apache/datafusion;

· Dandandan opened on Jan 4, 2026

Optimize NullState for non-null data

performanceMake DataFusion fasterMake DataFusion faster

Status: Open.

Feature

#19636 In apache/datafusion;

· Dandandan opened on Jan 4, 2026

Support async creation of schemas and tables in external catalog services

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19634 In apache/datafusion;

· majin1102 opened on Jan 4, 2026

Implement metrics for <code>AsyncFuncExec</code>

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19623 In apache/datafusion;

· feniljain opened on Jan 3, 2026

Improve scale support for binary decimal operations

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19621 In apache/datafusion;

· theirix opened on Jan 3, 2026

[EPIC] Complete DML Support (MERGE, INSERT OVERWRITE, TRUNCATE)

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19617 In apache/datafusion;

· ethan-tyler opened on Jan 3, 2026

Memory use trait / methods / macros

Status: Open.

#19615 In apache/datafusion;

· adriangb opened on Jan 2, 2026

Accumulators which don't implement <code>retract_batch</code> can still exhibit buggy behaviour

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#19612 In apache/datafusion;

· Jefffrey opened on Jan 2, 2026

Add a way to create a new <code>FilterExec</code> directly with a projection

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19608 In apache/datafusion;

· nuno-faria opened on Jan 2, 2026

Remove <code>CoalesceBatches</code> optimizer rule

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19591 In apache/datafusion;

· alamb opened on Jan 1, 2026

Compute HashJoinExec dynamic filters progressively

Status: Open.

#19580 In apache/datafusion;

· adriangb opened on Dec 31, 2025