How many times is married non sales employees against single non-sales employees?
non-sales employee refers to PersonType = 'EM'; married refers to MaritalStatus = 'M'; single refers to MaritalStatus = 'S'; percentage = DIVIDE(SUM(MaritalStatus = 'M'), (SUM(MaritalStatus = 'S') as percentage;
SELECT CAST(SUM(CASE WHEN T1.MaritalStatus = 'M' THEN 1 ELSE 0 END) AS REAL) * 100 / SUM(CASE WHEN T1.MaritalStatus = 'S' THEN 1 ELSE 0 END) FROM Employee AS T1 INNER JOIN Person AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID WHERE T2.PersonType = 'EM'