Crate Data 0.45.6 发布，此版本现已提供下载（crate-0.45.6.tar.gz），更新内容如下： Fix: Improve error messages on COPY TO and COPY FROM. Fix: Correctly plan group by queries using HAVING clause. Fix: Added comments to the logging.yml config file and reduced the amount of log entries by changing the loglevel of some log messages. Fix: Using CLUSTERED BY Column in PARTITIONED BY clause threw misleading exception. Fix: Inserting arrays with a null value at first position failed. Fix: Nested columns of ignored objects where exported as `null` values when using COPY TO. Improved speed of bulk inserts in partitioned tables to avoid request timeouts. Fix: The clustered-by columns could be updated if they were nested. Fix: Fixed an edge case where group by queries on system tables or grouping on primary key or routing column and using limit or selecting the same aggregation twice did not execute correctly. Fixed possible race condition that could cause the `LIMIT` to not be applied correctly. Fixed NPE which could occure on a shard failure while collecting distributed (e.g. group by query). Fix: Correctly validate array values in INSERT and UPDATE statements. Fix: NULL element in array in first element of bulk insert threw NPE. Fix: Array columns that were nested inside multiple objects had incorrect data type (type of their elements instead of array type). Fix: Adding column on partitioned table without partitions threw exception although column was added to schema. Crate Data 是一个开源的大规模的可伸缩的数据存储系统，无需任何系统管理需求。提供强大的搜索功能。用于存储各种表格数据、非结构化数据和二进制对象。并可通过 SQL 进行检索。易于安装和使用，支持高可用性和实时大规模并行访问和处理。 使用方法： Crate Data 0.45.6 发布，大规模数据存储系统下载地址
