Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE purchases (sales_details VARCHAR, purchase_details VARCHAR)
TABLE: CREATE TABLE sales (sales_details VARCHAR, purchase_details VARCHAR)

### Question ###
What are the details of all sales and purchases?

### Accurate SQL ###

SELECT sales_details FROM sales UNION SELECT purchase_details FROM purchases