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LT/ASOF JOIN with timestamp in ON clause crashes with AssertionError instead of returning proper error

BugIncorrect or unexpected behaviorIncorrect or unexpected behavior

Good first issueA great place to get familiar with the codebaseA great place to get familiar with the codebase

Help wantedAssistance or additional information is wantedAssistance or additional information is wanted

Status: Open.

#6637 In questdb/questdb;

· jerrinot opened on Jan 13, 2026

Potential performance optimization max(timestamp) as a function arg

PerformancePerformance improvementsPerformance improvements

SQLIssues or changes relating to SQL executionIssues or changes relating to SQL execution

Status: Open.

Feature

#6633 In questdb/questdb;

· javier opened on Jan 13, 2026

cairo.max.commit.rows

New featureFeature requestsFeature requests

Status: Open.

#6631 In questdb/questdb;

· earce-clearstreet opened on Jan 13, 2026

Incorrect result when using WHERE filter on TIMESTAMP with GROUP BY

Status: Open.

#6618 In questdb/questdb;

· krishbansal9966-ux opened on Jan 9, 2026

Fill Function makes existing non zero value 0

Status: Open.

#6601 In questdb/questdb;

· amit2223 opened on Jan 6, 2026

CREATE TABLE AS SELECT does not support all possible casting

BugIncorrect or unexpected behaviorIncorrect or unexpected behavior

Good first issueA great place to get familiar with the codebaseA great place to get familiar with the codebase

Status: Open.

#6583 In questdb/questdb;

· jerrinot opened on Dec 30, 2025

Fix HAVING clause in Cube.js driver

BugIncorrect or unexpected behaviorIncorrect or unexpected behavior

CompatibilityCompatibility with third-party tools and servicesCompatibility with third-party tools and services

Status: Open.

#6578 In questdb/questdb;

· puzpuzpuz opened on Dec 24, 2025

Line protocol: support unsigned integers

Status: Open.

#6567 In questdb/questdb;

· maximal opened on Dec 19, 2025

Line protocol: support <code>#</code> character for the comments

Status: Open.

#6566 In questdb/questdb;

· maximal opened on Dec 19, 2025

Line protocol: support multiple spaces for delimiting

Status: Open.

#6565 In questdb/questdb;

· maximal opened on Dec 19, 2025

"fd [number] is already closed" error after updating non-dedup columns

Status: Open.

#6553 In questdb/questdb;

· thensg opened on Dec 18, 2025

declare substitution inconsistent with implicit casts and constant folding

BugIncorrect or unexpected behaviorIncorrect or unexpected behavior

Friction

SQLIssues or changes relating to SQL executionIssues or changes relating to SQL execution

Status: Open.

#6547 In questdb/questdb;

· nwoolmer opened on Dec 17, 2025