Presto 0.204 Documentation

11.86. Release 0.130

11.86. 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.