Query analysis and improvement - Amazon Redshift
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Amazon Redshift will no longer support the creation of new Python UDFs starting November 1, 2025. If you would like to use Python UDFs, create the UDFs prior to that date. Existing Python UDFs will continue to function as normal. For more information, see the blog post .

Query analysis and improvement

Retrieving information from an Amazon Redshift data warehouse involves running complex queries on extremely large amounts of data, which can take a long time to process. To make sure that queries process as quickly as possible, there are a number of tools you can use to identify potential performance issues.

Topics