This release adds some bugfixes and optimizations and includes new and refined experimental features.
Experimental Features
- Refinements to
hyperloglogincluding a function to report relative error and fixing the functionality of rollup. - Introduction of a TopN approximation API. Presently this will only work for integer data, but expect to see further refinements that greatly expand this behavior.
- New
map_seriesandmap_datapipeline elements for the time series API that allow uses to provide custom transforms of their time series data. Additionally introduced a|>>pipeline operator for an even more streamlined interface into the new mapping functionality.
Bugfixes/Optimizations
- Made a pass through all toolkit functions to correctly label behavior as
immutableandparallel safe. This should improve the optimizations Postgres can apply to toolkit plans, particularly when run in a Timescale multinode cluster. - Improved handling of internal data structures to reduce extraneous copies of data.