text: IF  not EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[schema_info]') AND type in (N'U'))
  begin
  CREATE TABLE [dbo].[schema_info](
  	[schema_major_version] [int] NOT NULL,
  	[schema_minor_version] [int] NOT NULL,
  	[schema_extended_info] [nvarchar](100) NOT NULL,
   CONSTRAINT [PK_schema_info] PRIMARY KEY CLUSTERED 
  (
  	[schema_major_version] ASC,
  	[schema_minor_version] ASC
  )
  )
  end
  
  