Crate Data 0.47.0 发布，此版本现已提供下载（ZIP），更新内容如下： - Added support for array comparisons using the equals ``=`` operator. - Support `INSERT ... ON DUPLICATE KEY UPDATE` statement - Added case-insensitive regex operator ~* - Support PCRE compatible regular expressions - updated crate-admin version to 0.11.3 which contains following changes: - fixed bug that showed custom schemas in the table list as often as the amount of tables in that custom schema - Added support for the ``std_dev``, ``variance`` and ``geometric_mean`` aggregation functions - Added support for the CURRENT_TIMESTAMP expression - Throw an error while using unknown column references in ``SELECT`` statements while parent's policy is not of type ``ignored`` - Added support for the datetime function ``extract (field from source)`` - Support column referencing in ``Update`` statement assignment expression - Removed undocumented feature: It is no longer possible to use sys expressions in any context. - don’t allow full qualified names in UPDATE assignments, INSERT and INSERT INTO - The ``sys.operations`` table has now a ``_nodes`` system column which exposes information about the node the operation runs on. 同时还发布了 Crate 0.46.5 和 Crate 0.45.9 版本，详细改进内容请看发行说明。 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 0.47.0/0.46.5/0.45.9 发布下载地址
