Show all role codes and the number of employees in each role.
CREATE TABLE Employees (role_code VARCHAR)
SELECT role_code, COUNT(*) FROM Employees GROUP BY role_code
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE Employees (role_code VARCHAR) Question: Show all role codes and the number of employees in each role. [/INST] SELECT role_code, COUNT(*) FROM Employees GROUP BY role_code </s>