IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
              WHERE SYSCOLUMNS.NAME = 'KOORDINAT' AND SYSOBJECTS.name = 'SUBELER')
ALTER TABLE SUBELER ADD KOORDINAT nvarchar(100)
GO
IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
              WHERE SYSCOLUMNS.NAME = 'LOGOLINK' AND SYSOBJECTS.name = 'SUBELER')
ALTER TABLE SUBELER ADD LOGOLINK nvarchar(300)
GO