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SVCS_STREAM_SEGS - Amazon Redshift
Table columnsSample queries

Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the blog post that was published on June 30, 2025.

SVCS_STREAM_SEGS

Lists the relationship between streams and concurrent segments.

Note

System views with the prefix SVCS provide details about queries on both the main and concurrency scaling clusters. The views are similar to the tables with the prefix STL except that the STL tables provide information only for queries run on the main cluster.

SVCS_STREAM_SEGS 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.

Table columns

Column name Data type Description
userid integer ID of the user who generated the entry.
query integer Query ID. The query column can be used to join other system tables and views.
stream integer The set of concurrent segments of a query.
segment integer Number that identifies the query segment.

Sample queries

To view the relationship between streams and concurrent segments for the most recent query, type the following query: 

select *
from svcs_stream_segs
where query = pg_last_query_id();

 query | stream | segment
-------+--------+---------
    10 |      1 |       2
    10 |      0 |       0
    10 |      2 |       4
    10 |      1 |       3
    10 |      0 |       1
(5 rows)