IF not EXISTS( SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'bargehDetail' AND COLUMN_NAME = 'Pro_ID_VahedMali') begin alter table bargehDetail add Pro_ID_VahedMali int references Otherproperties (id) null end ; IF not EXISTS( SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'bargehDetail' AND COLUMN_NAME = 'Pro_ID_VahedMaliMaghsad') begin alter table bargehDetail add Pro_ID_VahedMaliMaghsad int references Otherproperties (id) null end