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Auto Stats Event Class

The Auto Stats event class indicates that an automatic updating of index and column statistics has occurred.

Data column name

Data type

Description

Column ID

Filterable

ApplicationName

nvarchar

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

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

9

Yes

DatabaseID

int

Identifier of the database specified by the USE database statement or the default database if no USE database statement has been issued for a given instance. SQL Server Profiler displays the name of the database if the ServerName 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

Name of the database in which the user statement is running.

35

Yes

Duration

bigint

Amount of time (in microseconds) taken by the event.

13

Yes

EndTime

datetime

Time at which the event ended.

15

Yes

Error

int

Error number of a given event. Often this is the error number stored in the sys.messages catalog view.

31

Yes

EventClass

int

Type of event = 58.

27

No

EventSequence

int

Sequence of a given event within the request.

51

No

EventSubClass

int

Type of event subclass:

EventSubClass

Description

1

Statistics created/updated synchronously; TextData column indicates which statistics and whether they were created or updated.

2

Asynchronous statistics update; job queued.

3

Asynchronous statistics update; job starting.

4

Asynchronous statistics update; job completed.

21

Yes

GroupID

int

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

66

Yes

HostName

nvarchar

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

IndexID

int

ID for the index/statistics entry on the object affected by the event. To determine the index ID for an object, use the index_id column of the sys.indexes catalog view.

24

Yes

IntegerData

int

Number of statistics collections that were successfully updated.

25

Yes

IntegerData2

int

Job sequence number.

55

Yes

IsSystem

int

Indicates whether the event occurred on a system process or a user process. 1 = system, 0 = user.

60

Yes

LoginName

nvarchar

Name of the login of the user (either SQL Server security login or the Windows login credentials in the form of DOMAIN\username).

11

Yes

LoginSid

image

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

Windows domain to which the user belongs.

7

Yes

NTUserName

nvarchar

Windows user name.

6

Yes

ObjectID

int

System-assigned ID of the object.

22

Yes

RequestID

int

The ID of the request containing the statement.

49

Yes

ServerName

nvarchar

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 you connect to SQL Server using Login1 and execute 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

Success

int

0 = error.

1 = success.

2 = skipped due to server throttling (MSDE).

23

Yes

TextData

ntext

Contents of this column depends on whether statistics are updated synchronously (EventSubClass 1) or asynchronously (EventSubClass 2, 3, or 4):

EventSubClass

TextData Contents

1

Lists which statistics were updated/created

2, 3, or 4

NULL; IndexID column is populated with the index/statistics ID for statistics updated.

1

Yes

TransactionID

bigint

System-assigned ID of the transaction.

4

Yes

Type

int

Type of job.

57

Yes

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