v.18.10
Backward Incompatible Changes
1Bug Fix
8- Removed Unnecessary Escaping of ODBC Connection String Parameters in Version 18.6.0
- Fixed REPLACE PARTITION Command Logic in Replication Queue
- Fixed Merge Bug for Empty Data Parts in Version 18.1.0
- Fixed Concurrent Set/Join Error
- Fixed UNION stream block structure mismatch error in sub-queries
- Fixed Memory Leak on MySQL Connection Exception
- Fixed ClickHouse Client Response Code for Query Errors
- Fixed Behavior of DISTINCT in Materialized Views
Build/Testing/Packaging Improvement
5Improvement
13- Clusters can be removed without server restart upon config deletion
- External dictionaries removable without server restart
- Added SETTINGS Support for Kafka Table Engine
- Improvements for UUID Data Type (In Progress)
- Support for Empty Parts in MergeTree Engines
- Old Records of Completed Mutations Deleted
- Added system.merge_tree_settings table
- New Dependency Columns Added to system.tables Table
- Added max_partition_size_to_drop Config Option
- Added output_format_json_escape_forward_slashes Option
- Added max_fetch_partition_retries_count Setting
- Added prefer_localhost_replica Setting for Local Replica Access
- quantileExact Function Returns nan for Empty Float32/Float64 Sets