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/). 

# STL\$1SORT
<a name="r_STL_SORT"></a>

Displays sort execution steps for queries, such as steps that use ORDER BY processing.

STL\$1SORT 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).

**Note**  
STL\$1SORT only contains queries run on main provisioned clusters. It doesn't contain queries run on concurrency scaling clusters or on serverless namespaces. To access explain plans for queries run on both main clusters, concurrency scaling clusters, and serverless namespaces, we recommend that you use the SYS monitoring view [SYS\$1QUERY\$1DETAIL](SYS_QUERY_DETAIL.md) . The data in the SYS monitoring view is formatted to be easier to use and understand.

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

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

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

The following example returns sort results for slice 0 and segment 1. 

```
select query, bytes, tbl, is_diskbased, workmem
from stl_sort
where slice=0 and segment=1;
```

```
 query |  bytes  | tbl | is_diskbased |  workmem
-------+---------+-----+--------------+-----------
   567 | 3126968 | 241 | f            | 383385600
   604 |    5292 | 242 | f            | 383385600
   675 |  104776 | 251 | f            | 383385600
   525 | 3126968 | 251 | f            | 383385600
   585 |    5068 | 241 | f            | 383385600
   630 |  204808 | 266 | f            | 383385600
   704 |       0 | 242 | f            |         0
   669 | 4606416 | 241 | f            | 383385600
   696 |  104776 | 241 | f            | 383385600
   651 | 4606416 | 254 | f            | 383385600
   632 |       0 | 256 | f            |         0
   599 |     396 | 241 | f            | 383385600
 86397 |       0 | 242 | f            |         0
   621 |    5292 | 241 | f            | 383385600
 86325 |       0 | 242 | f            |         0
   572 |    5068 | 242 | f            | 383385600
   645 |  204808 | 241 | f            | 383385600
   590 |     396 | 242 | f            | 383385600
(18 rows)
```