Amazon Redshift will no longer support the creation of new Python UDFs starting November 1, 2025.
If you would like to use Python UDFs, create the UDFs prior to that date.
Existing Python UDFs will continue to function as normal. For more information, see the
blog post
STL_MV_STATE
The STL_MV_STATE view contains a row for every state transition of a materialized view.
For more information about materialized views, see Materialized views in Amazon Redshift.
STL_MV_STATE 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.
Some or all of the data in this table can also be found in the SYS monitoring view SYS_MV_STATE. The data in the SYS monitoring view is formatted to be easier to use and understand. We recommend that you use the SYS monitoring view for your queries.
Table columns
| Column name | Data type | Description |
|---|---|---|
| userid | bigint | The ID of the user who created the event. |
| starttime | timestamp | The start time of the event. |
| xid | bigint | The transaction id of the event. |
| event_desc | char(500) | The event that prompted the state change. Some example
values include the following:
|
| db_name | char(128) | The database that contains the materialized view. |
| base_table_schema | char(128) | The schema of the base table. |
| base_table_name | char(128) | The name of the base table. |
| mv_schema | char(128) | The schema of the materialized view. |
| mv_name | char(128) | The name of the materialized view. |
| state | character(32) | The changed state of the materialized view as follows:
|
The following table shows example combinations of event_desc and state.
event_desc | state -------------------------+--------------- TRUNCATE | Recompute TRUNCATE | Recompute Small table conversion | Recompute Vacuum | Recompute Column was renamed | Unrefreshable Column was dropped | Unrefreshable Table was renamed | Unrefreshable Column type was changed | Unrefreshable Schema name was changed | Unrefreshable
Sample query
To view the log of state transitions of materialized views, run the following query.
select * from stl_mv_state;
This query returns the following sample output:
userid | starttime | xid | event_desc | db_name | base_table_schema | base_table_name | mv_schema | mv_name | state --------+----------------------------+------+-----------------------------+---------+----------------------+----------------------+----------------------+---------------+--------------- 138 | 2020-02-14 02:21:25.578885 | 5180 | TRUNCATE | dev | public | mv_base_table | public | mv_test | Recompute 138 | 2020-02-14 02:21:56.846774 | 5275 | Column was dropped | dev | | mv_base_table | public | mv_test | Unrefreshable 100 | 2020-02-13 22:09:53.041228 | 1794 | Column was renamed | dev | | mv_base_table | public | mv_test | Unrefreshable 1 | 2020-02-13 22:10:23.630914 | 1893 | ALTER TABLE ALTER SORTKEY | dev | public | mv_base_table_sorted | public | mv_test | Recompute 1 | 2020-02-17 22:57:22.497989 | 8455 | ALTER TABLE ALTER DISTSTYLE | dev | public | mv_base_table | public | mv_test | Recompute 173 | 2020-02-17 22:57:23.591434 | 8504 | Table was renamed | dev | | mv_base_table | public | mv_test | Unrefreshable 173 | 2020-02-17 22:57:27.229423 | 8592 | Column type was changed | dev | | mv_base_table | public | mv_test | Unrefreshable 197 | 2020-02-17 22:59:06.212569 | 9668 | TRUNCATE | dev | schemaf796e415850f4f | mv_base_table | schemaf796e415850f4f | mv_test | Recompute 138 | 2020-02-14 02:21:55.705655 | 5226 | Column was renamed | dev | | mv_base_table | public | mv_test | Unrefreshable 1 | 2020-02-14 02:22:26.292434 | 5325 | ALTER TABLE ALTER SORTKEY | dev | public | mv_base_table_sorted | public | mv_test | Recompute
