asked on

Creating a ChangeLog Database on SQL Server 2005

I am following a script I got at a SQL conference that creates a ChangeLog table and then creates a trigger that fires on any creation, modification, or deletion of database objects. I ran the following script and the table was created successfully. However, it is failing on the trigger creation.

/****** Object: Table [dbo].[ChangeLog] ******/
SET
ANSI_NULLS ON
GO
SET
QUOTED_IDENTIFIER ON
GO
SET
ANSI_PADDING ON
GO
CREATE TABLE [dbo].[aer_ChangeLog](
[LogId] [bigint] IDENTITY(1,1) NOT NULL,
[DatabaseName] [nvarchar](256) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[EventType] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[ObjectName] [varchar](256) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[ObjectType] [nvarchar](25) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[SqlCommand] [nvarchar](max) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[EventDate] [datetime] NOT NULL DEFAULT (getutcdate()),
[LoginName] [nvarchar](256) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
PRIMARY KEY NONCLUSTERED
	(
		[LogId] ASC
	)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
)
ON [PRIMARY]
GO
SET
ANSI_PADDING OFF


--Trigger
/****** Object: DdlTrigger [ddltrg_ObjectRevisionHistory] ******/
GO
SET
ANSI_NULLS ON
GO
SET
QUOTED_IDENTIFIER ON
GO

CREATE TRIGGER [aer_ddltrg_ObjectRevisionHistory]
ON [fin_pilot]
FOR
CREATE_PROCEDURE, ALTER_PROCEDURE, DROP_PROCEDURE, CREATE_TABLE, ALTER_TABLE, DROP_TABLE, CREATE_FUNCTION, ALTER_FUNCTION, DROP_FUNCTION,
CREATE_INDEX, ALTER_INDEX, DROP_INDEX, CREATE_TRIGGER, ALTER_TRIGGER, DROP_TRIGGER, CREATE_STATISTICS, DROP_STATISTICS, UPDATE_STATISTICS, CREATE_SCHEMA, ALTER_SCHEMA, DROP_SCHEMA, GRANT_DATABASE, DENY_DATABASE, REVOKE_DATABASE, CREATE_USER, ALTER_USER, DROP_USER, CREATE_VIEW, ALTER_VIEW, DROP_VIEW
as
BEGIN
SET NOCOUNT ON
DECLARE @data XML
SET @data = EVENTDATA()
INSERT INTO dbo.aer_ChangeLog
(databasename, eventtype, objectname, objecttype, sqlcommand, loginname)
VALUES
(
	@data.value('(/EVENT_INSTANCE/DatabaseName)[1]', 'varchar(256)'),
	@data.value('(/EVENT_INSTANCE/EventType)[1]', 'varchar(50)'),
	@data.value('(/EVENT_INSTANCE/ObjectName)[1]', 'varchar(256)'),
	@data.value('(/EVENT_INSTANCE/ObjectType)[1]', 'varchar(25)'),
	@data.value('(/EVENT_INSTANCE/TSQLCommand)[1]', 'varchar(max)'),
	@data.value('(/EVENT_INSTANCE/LoginName)[1]', 'varchar(256)')
)
END


GO
SET
ANSI_NULLS OFF
GO
SET
QUOTED_IDENTIFIER OFF
GO
ENABLE
TRIGGER [aer_ddltrg_ObjectRevisionHistory] ON fin_pilot

Open in new window

The error that I receive on the trigger creation is:

Msg 1098, Level 15, State 1, Procedure aer_ddltrg_ObjectRevisionHistory, Line 21
The specified event type(s) is/are not valid on the specified target object.

Open in new window

I looked up the EVENTDATA() data types for sql server 2005 and the data types appear to be valid. The error is actually showing to be on the line containing the closing parentheses after the @data.value lines.

What is causing this error?

ASKER CERTIFIED SOLUTION

Surendra Nath

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Carla Romere

ASKER

That worked. I also had to modify the column names to be case specific. The final create trigger code:

CREATE TRIGGER [aer_ddltrg_ObjectRevisionHistory]
ON DATABASE
FOR
CREATE_PROCEDURE, ALTER_PROCEDURE, DROP_PROCEDURE, CREATE_TABLE, ALTER_TABLE, DROP_TABLE, CREATE_FUNCTION, ALTER_FUNCTION, DROP_FUNCTION,
CREATE_INDEX, ALTER_INDEX, DROP_INDEX, CREATE_TRIGGER, ALTER_TRIGGER, DROP_TRIGGER, CREATE_STATISTICS, DROP_STATISTICS, UPDATE_STATISTICS, CREATE_SCHEMA, ALTER_SCHEMA, DROP_SCHEMA, GRANT_DATABASE, DENY_DATABASE, REVOKE_DATABASE, CREATE_USER, ALTER_USER, DROP_USER, CREATE_VIEW, ALTER_VIEW, DROP_VIEW
as
BEGIN
SET NOCOUNT ON
DECLARE @data XML
SET @data = EVENTDATA()
INSERT INTO dbo.aer_ChangeLog
(DatabaseName, EventType, ObjectName, ObjectType, SqlCommand, LoginName)
VALUES
(
	@data.value('(/EVENT_INSTANCE/DatabaseName)[1]', 'nvarchar(256)'),
	@data.value('(/EVENT_INSTANCE/EventType)[1]', 'nvarchar(50)'),
	@data.value('(/EVENT_INSTANCE/ObjectName)[1]', 'varchar(256)'),
	@data.value('(/EVENT_INSTANCE/ObjectType)[1]', 'nvarchar(25)'),
	@data.value('(/EVENT_INSTANCE/TSQLCommand)[1]', 'nvarchar(max)'),
	@data.value('(/EVENT_INSTANCE/LoginName)[1]', 'nvarchar(256)')
)
END

Open in new window