IF NOT EXISTS (SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'TELE_ORC_ETAPA' AND COLUMN_NAME = 'VERSAO_APLICATIVO' )
BEGIN 
	ALTER TABLE TELE_ORC_ETAPA ADD VERSAO_APLICATIVO varchar(30) COLLATE SQL_Latin1_General_CP1_CI_AS ; 	
END 