Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://amazonaws-china.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# CURRENT\_SESSION\_ARN
<a name="r_CURRENT_SESSION_ARN"></a>

Returns the ARN of the currently authorized global user. Global users present with the same identity across Redshift accounts, clusters, and Serverless workgroups. Global users log in through IAM Identity Center, or through IAM-based session authentication. Data lake users are global Amazon users. 

This function is typically used in the context of using multi-dialect Amazon Glue views. For more information about identity management with IAM Identity Center and Redshift, see [Connect Redshift with IAM Identity Center to give users a single sign-on experience](https://docs.amazonaws.cn/redshift/latest/mgmt/redshift-iam-access-control-idp-connect.html). For more information about multi-dialect Glue views [Creating views in the Amazon Glue Data Catalog](https://docs.amazonaws.cn/redshift/latest/dg/data-catalog-views-overview.html).

## Syntax
<a name="r_CURRENT_SESSION_ARN-synopsis"></a>

```
current_session_arn()
```

## Return type
<a name="r_CURRENT_SESSION_ARN-return-type"></a>

Returns a VARCHAR string of the globally authenticated user or a null value.

## Usage notes
<a name="r_CURRENT_SESSION_ARN-usage"></a>

Local users aren't supported and result in a null response.

## Example
<a name="r_CURRENT_SESSION_ARN-example"></a>

The following query returns the name of the current session ARN: 

```
SELECT current_session_arn();

current_session_arn
--------------
arn:aws:iam::123456789012:user/user
(1 row)
```