sys-database-event-session-fields-azure-sql-database.md

title	sys.database_event_session_fields
description	The sys.database_event_session_fields dynamic management view (DMV) returns a row for each customizable column that was explicitly set on events and targets in a database-scoped event session.
author	rwestMSFT
ms.author	randolphwest
ms.date	07/29/2025
ms.service	sql
ms.subservice	system-objects
ms.topic	reference
ms.custom	ignite-2025
dev_langs	TSQL
monikerRange	=azuresqldb-current || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric-sqldb

sys.database_event_session_fields

[!INCLUDE sqlserver2016-asdb-asdbmi-fabricsqldb]

The sys.database_event_session_fields dynamic management view (DMV) returns a row for each customizable column that was explicitly set on events and targets in a database-scoped event session.

• Azure SQL Database and SQL database in Fabric support only database-scoped sessions.
• Azure SQL Managed Instance supports both database-scoped sessions and server-scoped sessions. Server-scoped sessions are recommended for SQL managed instances. For more information, see CREATE EVENT SESSION code examples.

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

Requires the VIEW DATABASE PERFORMANCE STATE permission.

Remarks

This view has the following relationship cardinalities.

From	To	Relationship
sys.database_event_session_actions.event_session_id	sys.database_event_sessions.event_session_id	Many to one
sys.database_event_session_actions.event_id sys.database_event_session_actions.object_id sys.database_event_session_actions.event_session_id	sys.database_event_session_events.event_session_id sys.database_event_session_events.event_id	Many to one
sys.database_event_session_actions.event_session_id sys.database_event_session_actions.object_id	sys.database_event_session_targets.event_session_id sys.database_event_session_targets.target_id	Many to one

Related content

• Extended events in Azure SQL Database
• Event File target code for extended events in Azure SQL Database and SQL Managed Instance
• sys.database_event_sessions (Azure SQL Database and Azure SQL Managed Instance)
• sys.database_event_session_actions (Azure SQL Database and Azure SQL Managed Instance)
• Monitoring Microsoft Azure SQL Database and Azure SQL Managed Instance performance using dynamic management views