IF NOT EXISTS (SELECT* FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'RC_CLI' AND COLUMN_NAME = 'FLAG_CLI_FIDEL_LINX_PROMO')
BEGIN 
	ALTER TABLE RC_CLI ADD FLAG_CLI_FIDEL_LINX_PROMO TINYINT CONSTRAINT DF_RC_CLI_FLAG_CLI_FIDEL_LINX_PROMO DEFAULT 0 
END 