Show the customer id and number of accounts with most accounts.
CREATE TABLE Accounts (customer_id VARCHAR)
SELECT TOP 1 customer_id, COUNT(*) FROM Accounts GROUP BY customer_id ORDER BY COUNT(*) DESC
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE Accounts (customer_id VARCHAR) Question: Show the customer id and number of accounts with most accounts. [/INST] SELECT TOP 1 customer_id, COUNT(*) FROM Accounts GROUP BY customer_id ORDER BY COUNT(*) DESC </s>