Which state has greater than 50 CBSA officers of metro type?
greater than 50 CBSA officers of metro type refers to COUNT(CBSA_type = 'Metro') > 50;
SELECT T2.state FROM CBSA AS T1 INNER JOIN zip_data AS T2 ON T1.CBSA = T2.CBSA WHERE T1.CBSA_type = 'Metro' GROUP BY T2.state HAVING COUNT(T1.CBSA_type) > 50