IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
               WHERE SYSCOLUMNS.NAME = 'TELETIPCIHAZID' AND SYSOBJECTS.name = 'TCIHAZ')
ALTER TABLE dbo.TCIHAZ ADD
	TELETIPCIHAZID nvarchar(64) NULL
GO