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Merge pull request #29947 from taosdata/docs/roadmap 

docs: add roadmap
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---
title: Product Roadmap
---
The 2025 roadmap for TDengine OSS is described in the following table.
| Quarter | Feature |
| :----- | :----- |
| 2025Q1 | <ol><li>Virtual tables</li><li>Query engine: conditional expressions in <code>REGEXP</code>, <code>GREATEST</code>, <code>LEAST</code>, and <code>CAST</code> functions; improvements in single-row selection functions; time range interpolation with <code>INTERP</code></li><li>Storage engine: support for writing query results into supertables; <code>KEEP</code> parameter for supertables; performance improvements for the parameter binding interface</li><li>Stream processing: support for virtual tables; decreased compute resource usage; new mechanism for event notification; faster stream creation</li><li>Data types: support for the decimal data type</li><li>High availability: faster recovery from downtime; improved client failover</li><li>Stability: LTS release TDengine 3.3.6.x</li><li>JDBC driver: more efficient data ingestion</li><li>Ecosystem: integration with Microsoft Excel</li></ol> |
| 2025Q2 | <ol><li>Query engine: relaxed restrictions on <code>JOIN</code> queries; support for all mathematical functions in MySQL; integral, integral average, and continuous variance functions; optimization of the <code>CSUM</code> function; support for <code>COUNT(DISTINCT)</code> syntax; enhancements to event windows; faster filtering by tag; faster <code>INTERP</code> queries</li><li>Storage engine: decreased compute resource usage for TSMAs; improved write jitter</li><li>Stream processing: high availability of snodes</li><li>Data types: support for the blob data type</li><li>Data subscription: support for the MQTT protocol</li><li>High availability: faster replica configuration changes; faster recovery from downtime for clusters; improved data recovery after power outage</li><li>Observability: diagnostic tool for data ingestion</li></ol> |
| 2025Q3 | <ol><li>Query engine: more subqueries; support for all operators in MySQL; support for all time functions in MySQL; improved window calculation; reduced jitter in query performance; support for specifying columns in count windows</li><li>Storage engine: faster ingestion in SQL mode</li><li>Observability: diagnostic tool for queries; improved <code>EXPLAIN</code> output; monitoring of long-running tasks</li></ol> |
| 2025Q4 | <ol><li>Query engine: window functions (i.e. the <code>OVER</code> clause); support for all string, aggregation, and conditional functions in MySQL; sorting within groups for partition queries; controls for query resource usage; faster aggregate queries on subtables; time range interpolation in <code>INTERVAL</code> windows</li><li>Data types: support for variable-length strings</li><li>Caching: faster row-oriented caching</li><li>Observability: more insight into operations and maintenance</li></ol> |
For more information, see [TDengine Public Roadmap](https://github.com/orgs/taosdata/projects/4).

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title: 产品路线图
---
TDengine OSS 之 2025 年年度路线图如下表所示。
| 季度 | 功能 |
| :----- | :----- |
| 2025Q1 | <ol><li>虚拟表</li><li>查询能力：<code>REGEXP</code>、<code>GREATEST</code>、<code>LEAST</code>、<code>CAST</code> 函数支持判断表达式、单行选择函数的其他列值、<code>INTERP</code> 支持插值时间范围</li><li>存储能力：支持将查询结果写入超级表、超级表支持 <code>KEEP</code> 参数、STMT 写入性能提升</li><li>流计算：支持虚拟表、计算资源优化、事件通知机制、创建时间优化</li><li>数据类型：Decimal</li><li>高可用：加快宕机恢复时间、优化客户端 Failover 机制</li><li>稳定性：开始维护新的稳定版本 3.3.6.x</li><li>JDBC：高效写入</li><li>生态工具：对接 Tableau</li><li>生态工具：对接 Excel</li></ol> |
| 2025Q2 | <ol><li>查询能力：大幅放宽关联查询限制、支持 MySQL 所有数学函数、支持积分/积分平均/连续方差函数、<code>CSUM</code> 函数优化、<code>COUNT(DISTINCT)</code> 语法、事件窗口功能增强、提升标签过滤性能、提升 <code>INTERP</code> 查询性能</li><li>存储能力：TSMA 计算资源优化、写入抖动优化</li><li>流计算：节点高可用</li><li>数据类型：BLOB</li><li>数据订阅：支持 MQTT 协议</li><li>高可用：提高副本变更速度、提高集群宕机恢复速度、优化断电数据恢复机制</li><li>可观测性：写入诊断工具</li><li>生态工具：对接帆软 FineBI</li></ol> |
| 2025Q3 | <ol><li>查询能力：支持更多子查询类型、支持 MySQL 运算符、支持 MySQL 所有时间函数、窗口计算逻辑优化、查询性能抖动、计数窗口允许指定列</li><li>存储能力：提高 SQL 模式写入速度</li><li>可观测性：查询诊断工具、优化 <code>EXPLAIN</code> 输出、长任务观测</li></ol> |
| 2025Q4 | <ol><li>查询能力：窗口函数（<code>OVER</code> 子句）、支持 MySQL 所有字符串/聚合/条件函数、Partition 支持组内排序、控制查询资源占用、提高子表聚合查询性能、<code>INTERVAL</code> 窗口支持插值时间范围</li><li>数据类型：支持不定长度字符串数据类型</li><li>数据缓存：提升按行缓存性能</li><li>可观测性：增强运维可观测性</li></ol> |
欲了解更多信息，请参见 [TDengine Public Roadmap](https://github.com/orgs/taosdata/projects/4) 。