ml:athena []

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====== Athena ======


Athena helps you analyze unstructured, semi-structured, and structured data stored in Amazon S3. Examples include CSV, JSON, or columnar data formats such as Apache Parquet and Apache ORC. You can use Athena to run ad-hoc queries using ANSI SQL, without the need to aggregate or load the data into Athena.

===== Integrations =====

Quicksight - Athena integrates with Amazon QuickSight for easy data visualization. You can use Athena to generate reports or to explore data with business intelligence tools or SQL clients connected with a JDBC or an ODBC driver. 

Glue - Athena integrates with the AWS Glue Data Catalog, which offers a persistent metadata store for your data in Amazon S3. This allows you to create tables and query data in Athena based on a central metadata store available throughout your AWS account and integrated with the ETL and data discovery features of AWS Glue. 

Additional Integration Information - https://docs.aws.amazon.com/athena/latest/ug/athena-aws-service-integrations.html

===== Connecting to Athena Using 3rd Party Tools =====

Connecting using JDBC Tools 
You can use a JDBC connection to connect Athena to business intelligence tools and other applications, such as SQL Workbench.  
https://docs.aws.amazon.com/athena/latest/ug/connect-with-jdbc.html

Using ODBC Drivers - https://docs.aws.amazon.com/athena/latest/ug/connect-with-odbc.html 


===== Function Support =====


^ Function        ^ Description                            ^ Example                                          ^   More Details    ^
| regexp_replace  | Searches a string for a regular expression pattern and replaces every occurrence of the pattern with the specified string.   REGEXP_REPLACE ( source_string, pattern [, replace_string [ , position ] ] ) | "regexp_replace"("c"."address1", '[0-9A-Za-z]','')  |  https://docs.aws.amazon.com/redshift/latest/dg/REGEXP_REPLACE.html |


===== Working with Dates =====

For dates you will have to truncate the field to get the portion of the date you want. 

  * from_iso8601_date(substr(a.invoice_dt, 1,10)) as inv_dt
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