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_18 (losses INTEGER, wins VARCHAR, against VARCHAR, club VARCHAR)
### Question:
What are the least losses of Warrnambool with more than 6 wins and less than 630 against?
### Answer:
SELECT MIN(losses) FROM table_name_18 WHERE against < 630 AND club = "warrnambool" AND wins > 6