Holds information about all wait states encountered during execution of a request or query, including locks, waits on transmission queues, and so on.
|Column Name||Data Type||Description||Range|
|wait_id||bigint||Unique numeric id associated with the wait state.
Key for this view.
|Unique across all waits in the system.|
|session_id||nvarchar(32)||ID of the session on which the wait state occurred.||See session_id in sys.dm_pdw_exec_sessions (Transact-SQL).|
|type||nvarchar(255)||Type of wait this entry represents.||Information not available.|
|object_type||nvarchar(255)||Type of object that is affected by the wait.||Information not available.|
|object_name||nvarchar(386)||Name or GUID of the specified object that was affected by the wait.|
|request_id||nvarchar(32)||ID of the request on which the wait state occurred.||See request_id in sys.dm_pdw_exec_requests (Transact-SQL).|
|request_time||datetime||Time at which the wait state was requested.|
|acquire_time||datetime||Time at which the lock or resource was acquired.|
|state||nvarchar(50)||State of the wait state.||Information not available.|
|priority||int||Priority of the waiting item.||Information not available.|