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_20 (block INTEGER, spike VARCHAR, height VARCHAR)
### Question:
What is the lowest block that has 328 as the spike, and a height less than 186?
### Answer:
SELECT MIN(block) FROM table_name_20 WHERE spike = 328 AND height < 186