sys-server-event-session-fields-transact-sql.md

title	sys.server_event_session_fields (Transact-SQL)
description	The sys.server_event_session_fields catalog view returns a row for each customizable column that was explicitly set on events and targets.
author	rwestMSFT
ms.author	randolphwest
ms.date	09/23/2025
ms.service	sql
ms.subservice	system-objects
ms.topic	reference
f1_keywords	server_event_session_fields server_event_session_fields_TSQL sys.server_event_session_fields sys.server_event_session_fields_TSQL
helpviewer_keywords	sys.server_event_session_fields catalog view xe
dev_langs	TSQL
monikerRange	>=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current

sys.server_event_session_fields (Transact-SQL)

[!INCLUDE sqlserver-asdbmi]

Returns a row for each customizable column that was explicitly set on events and targets.

Column name	Data type	Description
event_session_id	int	The ID of the event session. Is not nullable.
object_id	int	The ID of the object this field is associated with. Is not nullable.
name	sysname	The name of the field. Is not nullable.
value	sql_variant	The value of the field. Is not nullable.

Permissions

[!INCLUDE sssql19-md] and previous versions require VIEW SERVER STATE permission on the server.

[!INCLUDE sssql22-md] and later versions require VIEW SERVER PERFORMANCE STATE permission on the server.

Remarks

This view has the following relationship cardinalities.

From	To	Relationship
sys.server_event_session_actions.event_session_id	sys.server_event_sessions.event_session_id	Many to one
sys.server_event_session_actions.event_id sys.server_event_session_actions.object_id sys.server_event_session_actions.event_session_id	sys.server_event_session_events.event_session_id sys.server_event_session_events.event_id	Many to one
sys.server_event_session_actions.event_session_id sys.server_event_session_actions.object_id	sys.server_event_session_targets.event_session_id sys.server_event_session_targets.target_id	Many to one

Related content

• System catalog views (Transact-SQL)
• Extended Events Catalog Views (Transact-SQL)
• Extended Events overview