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2019-11-30 14:25:48
11.111. Release 0.130
General Changes
- Fix a performance regression in
GROUP BY
and JOIN
queries when thelength 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 thecolumnar_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.