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/). 

# SVV\$1ALL\$1COLUMNS
<a name="r_SVV_ALL_COLUMNS"></a>

Use SVV\$1ALL\$1COLUMNS to view a union of columns from Amazon Redshift tables as shown in SVV\$1REDSHIFT\$1COLUMNS and the consolidated list of all external columns from all external tables. For information about Amazon Redshift columns, see [SVV\$1REDSHIFT\$1COLUMNS](r_SVV_REDSHIFT_COLUMNS.md).

SVV\$1ALL\$1COLUMNS 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="r_SVV_ALL_COLUMNS-table-columns"></a>

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

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

The following example returns the output of SVV\$1ALL\$1COLUMNS.

```
SELECT *
FROM svv_all_columns
WHERE database_name = 'tickit_db'
    AND TABLE_NAME = 'tickit_sales_redshift'
ORDER BY COLUMN_NAME,
    SCHEMA_NAME
LIMIT 5;

 database_name | schema_name |     table_name        | column_name | ordinal_position | column_default | is_nullable | data_type | character_maximum_length | numeric_precision | numeric_scale | remarks
 --------------+-------------+-----------------------+-------------+------------------+----------------+-------------+-----------+--------------------------+-------------------+---------------+---------
   tickit_db   |    public   | tickit_sales_redshift |    buyerid  |        4         |                |      NO     |  integer  |                          |         32        |       0       |
   tickit_db   |    public   | tickit_sales_redshift | commission  |        9         |                |     YES     |  numeric  |                          |          8        |	2       |
   tickit_db   |    public   | tickit_sales_redshift |    dateid   |        7         |                |      NO     |  smallint |                          |         16        |       0       |
   tickit_db   |    public   | tickit_sales_redshift |   eventid   |        5         |                |      NO     |  integer  |                          |         32        |       0       |
   tickit_db   |    public   | tickit_sales_redshift |    listid   |        2         |                |      NO     |  integer  |                          |         32        |       0       |
```