Github
来源:Facebook
浏览 211
扫码
分享
2020-06-15 08:16:24
13.123. 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.