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sys.trace_columns (Transact-SQL)

The sys.trace_columns catalog view contains a list of all trace event columns. These columns do not change for a given version of the SQL Server Database Engine.

For a complete list of supported trace events, see SQL Server Event Class Reference.

Important note Important

This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use Extended Event catalog views instead.

Applies to: SQL Server (SQL Server 2008 through current version).

Column name

Data type

Description

trace_column_id

smallint

Unique ID of this column.

name

nvarchar(128)

Unique name of this column. This parameter is not localized.

type_name

nvarchar(128)

Data type name of this column.

max_size

int

Maximum data size of this column in bytes.

is_filterable

bit

Indicates whether the column can be used in filter specification.

0 = false

1 = true

is_repeatable

bit

Indicates whether the column can be referenced in the "repeated column" data.

0 = false

1 = true

is_repeated_base

bit

Indicates whether this column is used as a unique key for referencing repeated data.

0 = false

1 = true

The visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.

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