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QN:Template Event Class

The QN:Template event reports information on the internal use of query templates. Query templates are the mechanism that the Database Engine uses to share definitions of a query for notification. These templates are created along with parameter tables. The Database Engine creates an event of this type when a query template is created, used, or destroyed.

Data column

Type

Description

Column number

Filterable

ApplicationName

nvarchar

The name of the client application that created the connection to an instance of SQL Server. This column is populated with the values passed by the application rather than the displayed name of the program.

10

Yes

ClientProcessID

int

The ID assigned by the host computer to the process where the client application is running. This data column is populated if the client process ID is provided by the client.

9

Yes

DatabaseID

int

The ID of the database specified by the USE database statement, or the ID of the default database if no USE databasestatement has been issued for a given instance. SQL Server Profiler displays the name of the database if the Server Name data column is captured in the trace and the server is available. Determine the value for a database by using the DB_ID function.

3

Yes

DatabaseName

nvarchar

The name of the database in which the user statement is running.

35

Yes

EventClass

int

Type of event = 201.

27

No

EventSequence

int

Sequence number for this event.

51

No

EventSubClass

nvarchar

The type of event subclass, providing further information about each event class. This column may contain the following values:

  • Template created

    Indicates that a query notification template has been created in the database.

  • Template matched

    Indicates when a query notification template is reused.

  • Template dropped

    Indicates when a query notification template is removed from the database.

21

Yes

GroupID

int

ID of the workload group where the SQL Trace event fires.

66

Yes

HostName

nvarchar

The name of the computer on which the client is running. This data column is populated if the host name is provided by the client. To determine the host name, use the HOST_NAME function.

8

Yes

IsSystem

int

Indicates whether the event occurred on a system process or a user process.

0 = user

1 = system

60

No

LoginName

nvarchar

The name of the login of the user (either SQL Server security login or the Windows login credentials in the form of DOMAIN\Username).

11

No

LoginSID

image

The security identification number (SID) of the logged-in user. You can find this information in the sys.server_principals catalog view. Each SID is unique for each login in the server.

41

Yes

NTDomainName

nvarchar

The Windows domain to which the user belongs.

7

Yes

NTUserName

nvarchar

The name of the user that owns the connection that generated this event.

6

Yes

RequestID

int

Identifier of the request that contains the statement.

49

Yes

ServerName

nvarchar

The name of the instance of SQL Server being traced.

26

No

SessionLoginName

nvarchar

Login name of the user that originated the session. For example, if an application connects to SQL Server using Login1 and executes a statement as Login2, SessionLoginName shows "Login1" and LoginName shows "Login2". This column displays both SQL Server and Windows logins.

64

Yes

SPID

int

ID of the session on which the event occurred.

12

Yes

StartTime

datetime

Time at which the event started, if available.

14

Yes

TextData

ntext

Returns an XML document containing information specific to this event. This document conforms to the XML schema available at the SQL Server Query Notification Profiler Event Schema page.

1

Yes

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