Auto Stats Event Class
The Auto Stats event class indicates that an automatic updating of index and column statistics has occurred.
Auto Stats Event Class Data Columns
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 sysmessages table.
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
1Statistics created/updated synchronously; TextData column indicates which statistics and whether they were created or updated.
2Asynchronous statistics update; job queued.
3Asynchronous statistics update; job starting.
4Asynchronous statistics update; job completed.
21
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 syslogins table of the master database. 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
1Lists which statistics were updated/created
2, 3, or 4NULL; 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
See Also
Other Resources
Monitoring Events
sp_trace_setevent (Transact-SQL)