IF not EXISTS( SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Tafsili' AND  COLUMN_NAME = 'AI_ID')
begin
	alter table dbo.Tafsili add AI_ID	int references dbo.AccountItem(ID) Null
end
;
IF not EXISTS( SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Tafsili' AND  COLUMN_NAME = 'AI_ID_Document')
begin
	alter table dbo.Tafsili add AI_ID_Document	int references dbo.AccountItem(ID) Null
end