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://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# SYS\$1DATASHARE\$1CHANGE\$1LOG
<a name="SYS_DATASHARE_CHANGE_LOG"></a>

Records the consolidated view for tracking changes to datashares on both producer and consumer clusters.

SYS\$1DATASHARE\$1CHANGE\$1LOG is visible to all users. Superusers can see all rows; regular users can see only their own data. For more information, see [Visibility of data in system tables and views](cm_chap_system-tables.md#c_visibility-of-data).

## Table columns
<a name="SYS_DATASHARE_CHANGE_LOG-table-rows"></a>

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/redshift/latest/dg/SYS_DATASHARE_CHANGE_LOG.html)

## Sample queries
<a name="SYS_DATASHARE_CHANGE_LOG-sample-queries"></a>

The following example shows a SYS\$1DATASHARE\$1CHANGE\$1LOG view.

```
SELECT DISTINCT action
FROM sys_datashare_change_log
WHERE share_object_name LIKE 'tickit%';

         action
 -----------------------
  "ALTER DATASHARE ADD"
```