SQL script - schema changes history

This SQL script reads events from the default trace, if it is enabled.
It's displays events for when any object changes occured (CREATE, DROP, ALTER).


declare @d1 datetime;
declare @diff int;
declare @curr_tracefilename varchar(500);
declare @base_tracefilename varchar(500);
declare @indx int ;
declare @temp_trace table (
 obj_name nvarchar(256) collate database_default
, database_name nvarchar(256) collate database_default
, start_time datetime
, event_class int
, event_subclass int
, object_type int
, server_name nvarchar(256) collate database_default
, login_name nvarchar(256) collate database_default
, application_name nvarchar(256) collate database_default
, ddl_operation nvarchar(40) collate database_default
);

select @curr_tracefilename = path from sys.traces where is_default = 1 ;
set @curr_tracefilename = reverse(@curr_tracefilename)
select @indx = PATINDEX('%\%', @curr_tracefilename)
set @curr_tracefilename = reverse(@curr_tracefilename)
set @base_tracefilename = LEFT(@curr_tracefilename,len(@curr_tracefilename) - @indx) + '\log.trc';

insert into @temp_trace
select ObjectName
, DatabaseName
, StartTime
, EventClass
, EventSubClass
, ObjectType
, ServerName
, LoginName
, ApplicationName
, 'temp'
from ::fn_trace_gettable( @base_tracefilename, default )
where EventClass in (46,47,164) and EventSubclass = 0 and
DatabaseID <> 2

update @temp_trace set ddl_operation = 'CREATE' where
event_class = 46
update @temp_trace set ddl_operation = 'DROP' where
event_class = 47
update @temp_trace set ddl_operation = 'ALTER' where
event_class = 164

select @d1 = min(start_time) from @temp_trace
set @diff= datediff(hh,@d1,getdate())
set @diff=@diff/24;

select @diff as difference
, @d1 as date
, object_type as obj_type_desc
, *
from @temp_trace where object_type not in (21587)
order by start_time desc

Here is ObjectType Reference from Default Trace

1 Index
2 Database
3 User Object
4 CHECK Constraint
5 Default or DEFAULT Constraint
6 FOREIGN KEY Constraint
7 PRIMARY KEY Constraint
8 Stored Procedure
9 User-Defined Function (UDF)
10 Rule
11 Replication Filter Stored Procedure
12 System Table
13 Trigger
14 Inline Function
15 Table Valued UDF
16 UNIQUE Constraint
17 User Table
18 View
19 Extended Stored Procedure
20 Ad hoc Query
21 Prepared Query
8259 Check Constraint
8260 Default (constraint or standalone)
8262 Foreign-key Constraint
8272 Stored Procedure
8274 Rule
8275 System Table
8276 Trigger on Server
8277 (User-defined) Table
8278 View
8280 Extended Stored Procedure
16724 CLR Trigger
16964 Database
16975 Object
17222 FullText Catalog
17232 CLR Stored Procedure
17235 Schema
17475 Credential
17491 DDL Event
17741 Management Event
17747 Security Event
17749 User Event
17985 CLR Aggregate Function
17993 Inline Table-valued SQL Function
18000 Partition Function
18002 Replication Filter Procedure
18004 Table-valued SQL Function
18259 Server Role
18263 Microsoft Windows Group
19265 Asymmetric Key
19277 Master Key
19280 Primary Key
19283 ObfusKey
19521 Asymmetric Key Login
19523 Certificate Login
19538 Role
19539 SQL Login
19543 Windows Login
20034 Remote Service Binding
20036 Event Notification on Database
20037 Event Notification
20038 Scalar SQL Function
20047 Event Notification on Object
20051 Synonym
20549 End Point
20801 Adhoc Queries which may be cached
20816 Prepared Queries which may be cached
20819 Service Broker Service Queue
20821 Unique Constraint
21057 Application Role
21059 Certificate
21075 Server
21076 Transact-SQL Trigger
21313 Assembly
21318 CLR Scalar Function
21321 Inline scalar SQL Function
21328 Partition Scheme
21333 User
21571 Service Broker Service Contract
21572 Trigger on Database
21574 CLR Table-valued Function
21577 Internal Table (For example, XML Node Table, Queue Table.)
21581 Service Broker Message Type
21586 Service Broker Route
21587 Statistics
21825 User
21827 User
21831 User
21843 User
21847 User
22099 Service Broker Service
22601 Index
22604 Certificate Login
22611 XMLSchema
22868 Type