The EventQueue
table has not changed from Sitecore 6.3 rev 110112 (Initial Release) to the latest version of Sitecore. You could drop and re-create the EventQueue table:
CREATE TABLE [dbo].[EventQueue](
[Id] [uniqueidentifier] NOT NULL,
[EventType] [nvarchar](256) NOT NULL,
[InstanceType] [nvarchar](256) NOT NULL,
[InstanceData] [nvarchar](max) NOT NULL,
[InstanceName] [nvarchar](128) NOT NULL,
[RaiseLocally] [int] NOT NULL,
[RaiseGlobally] [int] NOT NULL,
[UserName] [nvarchar](128) NOT NULL,
[Stamp] [timestamp] NOT NULL,
[Created] [datetime] NOT NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
ALTER TABLE [dbo].[EventQueue] ADD CONSTRAINT [DF_EventQueue_Created] DEFAULT (getutcdate()) FOR [Created]
GO
Note that you could download the latest version of Sitecore from SDN as a zip archive and attach the empty databases to compare. Previous versions are also available for download.
But since you may have missed out on a whole bunch of other stuff, I would recommend you compare the database schema from a fresh DB using something like Redgate SQL Compare or Microsoft SQL Server Data Tools from within Visual Studio