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 customer ( store_id VARCHAR )

### Question ###
Which store has most the customers?

### Accurate SQL ###

SELECT store_id FROM customer GROUP BY store_id ORDER BY COUNT(*) DESC LIMIT 1