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GROUP BY on a VARCHAR column is priced by the declared width, not the data: 10s at VARCHAR(32) vs not completing at VARCHAR(4096) for identical values (3.4.2.5)

Status: Open.

#35453 In taosdata/TDengine;

· alexey-milovidov opened on Aug 31, 2026

GROUP BY is capped at 10,000,000 groups: undocumented, no configuration parameter, enforced only after a full scan (3.4.2.5)

Status: Open.

#35452 In taosdata/TDengine;

· alexey-milovidov opened on Aug 31, 2026

AGG(DISTINCT x) beside an aggregate over an expression fails with Out of range [0x80000112] (3.4.2.5)

Status: Open.

#35451 In taosdata/TDengine;

· alexey-milovidov opened on Aug 31, 2026

GROUP BY ... LIMIT n returns all groups when the query has no ORDER BY (3.4.2.5)

Status: Open.

#35450 In taosdata/TDengine;

· alexey-milovidov opened on Aug 31, 2026

taosd segfaults on COUNT(DISTINCT col) when the deduplicated set spills to disk (3.4.2.5)

Status: Open.

#35449 In taosdata/TDengine;

· alexey-milovidov opened on Aug 31, 2026

taos2.2.2.10 报错Database memory is full ，建不了新表，以及两个vnode同步有问题

bugSomething isn't workingSomething isn't working

Status: Open.

#35443 In taosdata/TDengine;

· MoocKiller opened on Aug 27, 2026

taosdump 3.3.4.3 导出数据时吐核

bugSomething isn't workingSomething isn't working

Status: Open.

#35437 In taosdata/TDengine;

· MeeTwoo opened on Aug 18, 2026

创建流后，刚开始可以执行，跑一段时间后出现错误

bugSomething isn't workingSomething isn't working

Status: Open.

#35420 In taosdata/TDengine;

· bfansheng opened on Aug 4, 2026

insert时0X530错误

bugSomething isn't workingSomething isn't working

Status: Open.

#35419 In taosdata/TDengine;

· dskxvos opened on Jul 31, 2026

[taosdump] aborts DB dump with rc 255 on tables written during the dump

bugSomething isn't workingSomething isn't working

Status: Open.

#35415 In taosdata/TDengine;

· rpyxao opened on Jul 22, 2026

Feature: symmetric first-row-per-partition query for super tables, e.g. FIRST_ROW(*)

Status: Open.

#35407 In taosdata/TDengine;

· Gerrit1999 opened on Jul 17, 2026

s3toss can panic on malformed configuration entries

Status: Open.

#35403 In taosdata/TDengine;

· VectorPeak opened on Jul 16, 2026