Its a common question, that How to trace changes made in database objects. Like,
Who has drooped my table ?
Who made changes in my view?
Who made changes in store procedure/Function?
You can solve this problem by creating a DDL (Data Definition Language) i.e. Create, Update, Drop trigger, to trace changes made in a database.
--==============CREATE table to store changes
CREATE TABLE [dbo].[ChangeLog](
[LogId] [int] IDENTITY(1,1) NOT NULL,
[DatabaseName] [varchar] (256) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[EventType] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[ObjectName] [varchar](256) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[ObjectType] [varchar](25) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[SqlCommand] [varchar](max) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[EventDate] [datetime] NOT NULL CONSTRAINT [DF_EventsLog_EventDate] DEFAULT (getdate()),
[LoginName] [varchar](256) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
) ON [PRIMARY]
go
--============= CREATE DATABASE TRIGGER TO INSERT CHANGES INTO dbo.changelog TABLE ===========
CREATE trigger backup_objects
on database
for create_procedure, alter_procedure, drop_procedure,
create_table, alter_table, drop_table,
create_function, alter_function, drop_function
as
set nocount on
declare @data xml
DECLARE @client_ip VARCHAR(15)
set @data = EVENTDATA()
SELECT @client_ip = client_net_address
FROM sys.dm_exec_connections
WHERE session_id =@data.value('(/EVENT_INSTANCE/SPID)[1]', 'varchar(256)')
insert into YOURDATABASE.dbo.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/SchemaName)[1]', 'varchar(256)') +'.'+
@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)')+'('+@client_ip+')'
)
JSON in Microsoft SQL Server: A Comprehensive Guide
23 hours ago
what about versioning?
ReplyDeleteChange the "ALTER" to "Create" in trigger.
ReplyDeleteI cannot get this to work, since the trigger does not have the rights to query sys.dm_exec_connections. What now?
ReplyDeleteCan you audit even the foreign key constraints or just a basic (create table, drop table & alter table)?
ReplyDelete