# SQL reference for Amazon S3 Select
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**Important**  
Amazon S3 Select is no longer available to new customers. Existing customers of Amazon S3 Select can continue to use the feature as usual. [Learn more](https://amazonaws-china.com/blogs/storage/how-to-optimize-querying-your-data-in-amazon-s3/) 

This reference contains a description of the structured query language (SQL) elements that are supported by Amazon S3 Select.

**Topics**
+ [SELECT command](s3-select-sql-reference-select.md)
+ [Data types](s3-select-sql-reference-data-types.md)
+ [Operators](s3-select-sql-reference-operators.md)
+ [Reserved keywords](s3-select-sql-reference-keyword-list.md)
+ [SQL functions](s3-select-sql-reference-sql-functions.md)