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_2801442_1 (code VARCHAR, density_in_2011___km²_ VARCHAR)
### Question:
What's the code of the district with 800.5 people per km2?
### Answer:
SELECT code FROM table_2801442_1 WHERE density_in_2011___km²_ = "800.5"