Buat Pemicu untuk mencatat SQL yang memengaruhi tabel?

Saya menyadari masalah ini telah diselesaikan tetapi saya tertarik pada bagaimana hal itu dapat diselesaikan menggunakan SQL Server 2008 extended event. Ini adalah permainan pertama saya dengan XEvents, jadi saya yakin masih banyak yang harus diperbaiki!

Skrip untuk menyiapkan Basis Data pengujian

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

Jadi skenarionya adalah TableWithMysteryUpdate sedang diperbarui tetapi saya tidak yakin dengan apa. Saya akan menambahkan pemicu pembaruan yang tidak melakukan apa pun agar dapat memfilter objek ini.

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

END

Kemudian jalankan skrip untuk membuat Sesi XEvents, jalankan prosedur yang pada akhirnya akan menurunkan tumpukan panggilan yang menyebabkan Pembaruan terjadi, lalu hentikan sesi.

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

Data jejak dapat dibaca dengan

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)

Bagian tumpukan panggilan adalah

 <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>

Bergabung ke DMV

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

memberikan hasil (menampilkan seluruh tumpukan panggilan tsql)