IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
               WHERE SYSCOLUMNS.NAME = 'ALTLIMITTUTAR' AND SYSOBJECTS.name = 'HAKEDIS')
ALTER TABLE dbo.HAKEDIS ADD
	ALTLIMITTUTAR decimal(18, 2) NOT NULL CONSTRAINT DF_HAKEDIS_ALTLIMITTUTAR DEFAULT 0
GO