Original URL: https://amazonaws-china.com/blogs/big-data/working-with-nested-data-types-using-amazon-redshift-spectrum/ 前言 作为一个托管的数据仓库服务,Amazon Redshift从它发布至今已经帮助全球成千上万的客户实现了PB级别数据的分析能力,实现了复杂SQL的快速查询。但随着数据的飞速增长,我们看到越来越多...
Redshift Spectrum 是Amazon Redshift的一项功能,允许直接查询存储在Amazon S3上的数据,并支持嵌套数据类型。此文将讨论哪些用例可从嵌套数据类型中获益,如何将 Amazon Redshift Spectrum 与嵌套数据类型配合使用以实现出色的性能和存储效率,以及嵌套数据类型的一些局限性。 此博文使用虚拟数据生成的数据集。可以查看其表...
Amazon Redshift Spectrum の開始方法 Amazon Redshift Spectrum 用の IAM ポリシー Redshift Spectrum と Lake Formation Amazon Redshift Spectrum でクエリ用のデータファイルを作成する 外部スキーマ 外部テーブル Apache Iceberg テーブルの使用 サポートされているデータ型 Amazon Redshift Spectrum ク...
Use Amazon Redshift Spectrum to query and retrieve data from files in Amazon S3 without having to load the data into Amazon Redshift tables.
例如 Amazon Redshift Spectrum、基于 SSD 的 RA3 节点类型、暂停和恢复集群、Amazon Redshift 数据共享和 AQUA(高级查询加速器)等。每项改进和/或新功能都可以提高 Amazon Redshift 的性能和/或降低成本。深入地了解以上功能可以帮助您更高效地使用Amazon Redshift。
Amazon Redshift Spectrum允许使用SQL语句査询存储在Amazon S3中的数据。要在Amazon Redshift spectrum中创建和查询外部表,您可以按照以下步骤操作: 1.创建外部架构:外部架构是AWS Glue Data Catalog中定义的外部数据库的命名容器,您可以使用CREATE EXTERNAL SCHEMA命令注册在外部目录中定义的外部数据库,并使外部表可用于...
AWS Big Data Blog Accelerate Amazon Redshift Data Lake queries with AWS Glue Data Catalog Column Statistics Seamless integration of data lake and data warehouse using Amazon Redshift Spectrum and Amazon DataZone Create, train, and deploy Amazon Redshift ML model integrating features from Amazon SageM...
Redshift Spectrum supports Enhanced VPC Routing. If you store data in a columnar format, Redshift Spectrum scans only the columns needed by your query, rather than processing entire rows. If you compress your data using one of Redshift Spectrum’s supported compression algorithms, less data is...
In the case of Redshift Spectrum, in addition to compute fees, you pay for the amount of data scanned in S3. The price dimension relevant to Reserved pricing is Instance Type. Unlike other services, such as EC2, RDS or EMR, there are not a lot of instance types available in Redshift....
Regarding this feature, Sergio mentions, “we had some use cases in which Spectrum was handy. But it’s also true that the data should be properly partitioned, and the user access has to be controlled to avoid surprises in the billing.” ...