Amazon Redshift
Database Developer Guide (API Version 2012-12-01)

STV_WLM_QUERY_TASK_STATE

Contains the current state of service class query tasks.

STV_WLM_QUERY_TASK_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.

Table Columns

Column Name Data Type Description
service_class integer ID for the service class. For a list of service class IDs, see WLM Service Class IDs.
task integer ID used to track a query through the workload manager. Can be associated with multiple query IDs. If a query is restarted, the query is assigned a new query ID but not a new task ID.
query integer Query ID. If a query is restarted, the query is assigned a new query ID but not a new task ID.
slot_count integer Number of WLM query slots.
start_time timestamp Time that the query began executing.
exec_time bigint Number of microseconds that the query has been executing.

Sample Query

The following query displays the current state of queries in service classes greater than 4. For a list of service class IDs, see WLM Service Class IDs.

select * from stv_wlm_query_task_state where service_class > 4;

This query returns the following sample output:

service_class | task | query | start_time | exec_time --------------+------+-------+----------------------------+----------- 5 | 466 | 491 | 2010-10-06 13:29:23.063787 | 357618748 (1 row)

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