IF EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id WHERE SYSCOLUMNS.NAME = 'SONUCACIKLAMA' AND SYSOBJECTS.name = 'MDLHBSVFATURALAMA')
BEGIN
          ALTER TABLE MDLHBSVFATURALAMA ALTER COLUMN SONUCACIKLAMA [NVARCHAR](500) NULL
END