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_37 (points_diff INTEGER, points VARCHAR, against VARCHAR, lost VARCHAR)
### Question:
I want the lowest points diff for against being less than 578 and lost being 15 and points more than 26
### Answer:
SELECT MIN(points_diff) FROM table_name_37 WHERE against < 578 AND lost = 15 AND points > 26