Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_73 (points_diff VARCHAR, points_against VARCHAR)
### Question:
What is points diff when points against is 123?
### Answer:
SELECT points_diff FROM table_name_73 WHERE points_against = "123"