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2021-01-27 21:44:10
13.143. Release 0.130
General Changes
- Fix a performance regression in
GROUP BY
and JOIN
queries when the length of the keys is between 16 and 31 bytes. - Add
map_concat()
function. - Performance improvements for filters, projections and dictionary encoded data. This optimization is turned off by default. It can be configured via the
optimizer.columnar-processing-dictionary
config property or the columnar_processing_dictionary
session property. - Improve performance of aggregation queries with large numbers of groups.
- Improve performance for queries that use ARRAY type.
- Fix querying remote views in MySQL and PostgreSQL connectors.