iotdb

Features & Improvements

• Data Query: Supports table model query and write-back functions.
• Data Query: The MATCH RECOGNIZE feature for table models supports aggregate functions to capture continuous data for analysis and calculation.
• Data Query: Added built-in scalar functions bit manipulation functions for table models.
• Data Query: Added pushdown-enabled EXTRACT time function for tab...

Features & Improvements

• Data Query: Optimized query performance for multiple scenarios, including the multi-series Last query.
• Data Query: Added the FastLastQuery interface to the Java SDK, supporting more efficient Last query operations.
• Data Query: Adjusted the tree-model fetchSchema to return data in segmented streaming mode, improving response speed in large-data-volume scenarios....

Improvements

• Storage Module: Optimize user password encryption by changing the algorithm to SHA-256
• ...

Bugs

• Fixed the array out-of-bounds exception in cross-Region aggregate query with align by device
• Fixed the error in aggregate queries with order by time + align by device for single or multiple devices spanning across Regions
• Fixed the "out of memory" error in query w...

Features & Improvements

• Data Query: Support manual creation of tree-to-table views
• Data Query: Table model adds window functions
• Data Query: Table model adds the aggregate function approx_most_frequent
• Data Query: Table model JOIN function expansion, supporting LEFT & RIGHT JOIN, ASOF LEFT JOIN
• Data Query: Table model supports row pattern recognition, enabling capture of continuo...

Features & Improvements

• Data Query: Added user-defined table functions (UDTF) and various built-in table functions to the table model.
• Data Query: Added support for ASOF INNER JOIN on time columns in the table model.
• Data Query: Added the approximate aggregation function approx_count_distinct to the table model.
• Stream Processing: Added support for asynchronous loading of TsFile thr...