IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
              WHERE SYSCOLUMNS.NAME = 'ANESTEZICERRAHINOT' AND SYSOBJECTS.name = 'HYCERRAHIGUVEVLIK')
ALTER TABLE dbo.HYCERRAHIGUVEVLIK ADD ANESTEZICERRAHINOT NVARCHAR(100) null
go
