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
Reviewing queue wait times for queries
The following query shows how long recent queries waited for an open slot in a query queue before running. If you see a trend of high wait times, you might want to modify your query queue configuration for better throughput. For more information, see Implementing manual WLM.
select trim(database) as DB , w.query, substring(q.querytxt, 1, 100) as querytxt, w.queue_start_time, w.service_class as class, w.slot_count as slots, w.total_queue_time/1000000 as queue_seconds, w.total_exec_time/1000000 exec_seconds, (w.total_queue_time+w.total_Exec_time)/1000000 as total_seconds from stl_wlm_query w left join stl_query q on q.query = w.query and q.userid = w.userid where w.queue_start_Time >= dateadd(day, -7, current_Date) and w.total_queue_Time > 0 and w.userid >1 and q.starttime >= dateadd(day, -7, current_Date) order by w.total_queue_time desc, w.queue_start_time desc limit 35;