Format ‘column1_name column1_type, column2_name column2_type, …’ Supports following wildcards in read-only mode: *, ?, where N, M - numbers, ’abc’, ‘def’ - strings The S3 table function is in the official list, and the basic syntax is the following: For example, there's MySQL Server, ODBC or JDBC connection, file, URL, and, more recently, S3-compatible storage. S3 Table FunctionĬlickHouse has a powerful method to integrate with external systems called "table functions." Table functions allow users to export/import data into other sources, and there are plenty of sources available.
In this article, we will explain how this integration works. While this functionality is still experimental, it has already attracted a lot of attention at meetups and webinars. In addition to the basic import/export functionality, ClickHouse can use object storage for MergeTree table data. Since then object storage support has evolved considerably. The first attempts to marry ClickHouse and object storage were merged more than a year ago. ClickHouse now supports both of these uses for S3 compatible object storage. Second, it can offer cheap and highly durable storage for table data. First, it can hold raw data to import from or export to other systems (a.k.a. In modern cloud systems, the most important external system is object storage. ClickHouse is a polyglot database that can talk to many external systems using dedicated engines or table functions.
0 kommentar(er)
