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 department_stores (dept_store_chain_id VARCHAR)

### Question ###
What are the ids of the two department store chains with the largest number of department stores?

### Accurate SQL ###

SELECT dept_store_chain_id FROM department_stores GROUP BY dept_store_chain_id ORDER BY COUNT(*) DESC LIMIT 2