テーブルに影響を与えたSQLをログに記録するトリガーを作成しますか？

この問題はすでに解決されていることに気付きましたが、SQLServer2008の拡張イベントを使用してこの問題を解決する方法に興味がありました。 XEventsを使ったのはこれが初めてなので、改善すべき点はたくさんあると思います！

テストデータベースを設定するためのスクリプト

CREATE TABLE [dbo].[TableWithMysteryUpdate](
    [Period] [int] NOT NULL,
    [ColumnThatWillBeUpdated] [int]  NOT NULL
) ON [PRIMARY]
GO
INSERT [dbo].[TableWithMysteryUpdate] ([Period], [ColumnThatWillBeUpdated]) VALUES (1, 20)
INSERT [dbo].[TableWithMysteryUpdate] ([Period], [ColumnThatWillBeUpdated]) VALUES (2, 23)

GO

CREATE TABLE [dbo].[TestTable](
    [foo] [int] IDENTITY(1,1) NOT NULL,
    [bar] [nchar](10) NOT NULL,
 CONSTRAINT [PK_TestTable] PRIMARY KEY CLUSTERED 
(
    [foo] ASC
)
)
GO

CREATE TRIGGER [dbo].[triggerCausingMysteryUpdate] 
   ON  [dbo].[TestTable] 
   AFTER INSERT
AS 
BEGIN
    SET NOCOUNT ON;
UPDATE [dbo].[TableWithMysteryUpdate]
   SET [Period] = [Period]+1

END
GO

CREATE PROCEDURE [dbo].[Proc4]
AS
BEGIN
INSERT INTO [dbo].[TestTable]
           (
           [bar])
     VALUES
           ('Test')
END

GO

CREATE PROCEDURE [dbo].[Proc3]
AS
BEGIN
EXEC dbo.Proc4
END
GO

CREATE PROCEDURE [dbo].[Proc2]
AS
BEGIN
EXEC dbo.Proc3
END
GO

CREATE PROCEDURE [dbo].[Proc1]
AS
BEGIN
EXEC dbo.Proc2
END

したがって、シナリオはTableWithMysteryUpdate 更新中ですが、何が原因かわかりません。このオブジェクトでフィルタリングできるようにするために、何もしない更新トリガーを追加します。

CREATE TRIGGER [dbo].[triggerAfterUpdate] 
   ON  [dbo].[TableWithMysteryUpdate] 
   AFTER UPDATE
AS 
BEGIN
    SET NOCOUNT ON;

END

次に、スクリプトを実行してXEventsセッションを作成し、最終的にコールスタックをダウンさせて更新を発生させるプロシージャを起動してから、セッションを停止します。

USE TestDB    

DECLARE @DynSql nvarchar(max)

SET @DynSql = '

IF EXISTS(SELECT * FROM sys.server_event_sessions WHERE name=''test_trace'')
    DROP EVENT SESSION [test_trace] ON SERVER;
CREATE EVENT SESSION [test_trace]
ON SERVER
ADD EVENT sqlserver.sql_statement_completed(
     ACTION (package0.callstack, sqlserver.session_id, sqlserver.sql_text, sqlserver.tsql_stack)
     WHERE (object_id = ' + cast(object_id('[dbo].[triggerAfterUpdate]') as varchar(10)) + ') 
     )
,
ADD EVENT sqlserver.sp_statement_completed(
     ACTION (package0.callstack, sqlserver.session_id, sqlserver.sql_text, sqlserver.tsql_stack)
     WHERE (object_id = ' + cast(object_id('[dbo].[triggerAfterUpdate]') as varchar(10)) + ') 
     )
ADD TARGET package0.asynchronous_file_target
(set filename = ''c:\temp\test_trace.xel'' , metadatafile = ''c:\temp\test_trace.xem'')
ALTER EVENT SESSION [test_trace] ON SERVER STATE = START
'

EXEC sp_executesql @DynSql
GO

EXEC  dbo.Proc1

GO

ALTER EVENT SESSION [test_trace] ON SERVER STATE = STOP

トレースデータはで読み取ることができます

SELECT CONVERT (XML, event_data) AS data
        FROM sys.fn_xe_file_target_read_file ('C:\Temp\test_trace*.xel', 'C:\Temp\test_trace*.xem', NULL, NULL)

コールスタック部分は

 <action name="tsql_stack" package="sqlserver">
    <value>&lt;frame level='1' handle='0x03000800E8EA0D0612E4EB00A59D00000000000000000000' line='6' offsetStart='228' offsetEnd='264'/&gt;
&lt;frame level='2' handle='0x03000800921155002C81E700A59D00000000000000000000' line='8' offsetStart='258' offsetEnd='398'/&gt;
&lt;frame level='3' handle='0x03000800CB3549012F81E700A59D00000100000000000000' line='5' offsetStart='90' offsetEnd='284'/&gt;
&lt;frame level='4' handle='0x03000800045A3D022F81E700A59D00000100000000000000' line='5' offsetStart='90' offsetEnd='120'/&gt;
&lt;frame level='5' handle='0x030008003D7E31033081E700A59D00000100000000000000' line='5' offsetStart='90' offsetEnd='120'/&gt;
&lt;frame level='6' handle='0x0300080076A225043081E700A59D00000100000000000000' line='5' offsetStart='90' offsetEnd='120'/&gt;
&lt;frame level='7' handle='0x010008002E775203603D9A0D000000000000000000000000' line='2' offsetStart='4' offsetEnd='-1'/&gt;</value>
    <text />
  </action>

DMVに参加する

WITH CapturedResults AS
    ( SELECT data.value ( '(/event/@timestamp)[1]', 'DATETIME')                                        AS [TIME],
        data.value ( '(/event/data[@name=''cpu'']/value)[1]', 'INT')                                   AS [CPU (ms)],
        CONVERT (FLOAT, data.value ('(/event/data[@name=''duration'']/value)[1]', 'BIGINT')) / 1000000 AS [Duration (s)],
        data.value ( '(/event/action[@name=''sql_text'']/value)[1]', 'VARCHAR(MAX)')                   AS [SQL STATEMENT],
        CAST(data.value('(/event/action[@name="tsql_stack"]/value)[1]','varchar(MAX)') AS XML)         AS [stack_xml]
    FROM (SELECT CONVERT (XML, event_data) AS                                                             data
        FROM sys.fn_xe_file_target_read_file ('C:\Temp\test_trace*.xel', 'C:\Temp\test_trace*.xem', NULL, NULL)
        )
        entries
    )
    ,
    StackData AS
    ( SELECT frame_xml.value('(./@level)', 'int')      AS [frame_level],
        frame_xml.value('(./@handle)', 'varchar(MAX)') AS [sql_handle],
        frame_xml.value('(./@offsetStart)', 'int')     AS [offset_start],
        frame_xml.value('(./@offsetEnd)', 'int')       AS [offset_end]
    FROM CapturedResults CROSS APPLY stack_xml.nodes('//frame') N (frame_xml)
    )
SELECT sd.frame_level,
    object_name(st.objectid, st.dbid) AS ObjectName,
    SUBSTRING(st.text, (sd.offset_start/2)+1, ((
            CASE sd.offset_end
                WHEN -1
                THEN DATALENGTH(st.text)
                ELSE sd.offset_end
            END - sd.offset_start)/2) + 1) AS statement_text,
    qp.query_plan,
    qs2.creation_time,
    qs2.last_execution_time,
    qs2.execution_count
FROM StackData AS sd CROSS APPLY sys.dm_exec_sql_text(CONVERT(VARBINARY(MAX),sd.sql_handle,1)) AS st
    LEFT OUTER JOIN sys.dm_exec_query_stats qs2
    ON  qs2.sql_handle = CONVERT(VARBINARY(MAX),sd.sql_handle,1) OUTER APPLY sys.dm_exec_query_plan(CONVERT(VARBINARY(MAX),qs2.plan_handle,1)) AS qp

結果を表示します（tsql呼び出しスタック全体を表示します）