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 purchases (sales_details VARCHAR, purchase_details VARCHAR); CREATE TABLE sales (sales_details VARCHAR, purchase_details VARCHAR)
### Question:
What are the details of all sales and purchases?
### Answer:
SELECT sales_details FROM sales UNION SELECT purchase_details FROM purchases