IF NOT EXISTS (SELECT* FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'TELE_ORC_PAG_DUPLICATA' AND COLUMN_NAME = 'ADQUIRENTE' )
BEGIN 
	ALTER TABLE TELE_ORC_PAG_DUPLICATA ADD ADQUIRENTE VARCHAR(50) COLLATE SQL_LATIN1_GENERAL_CP1_CI_AS NULL;
END 