What is the salary rate per hour that the company paid to the first 5 employees that they hired?
salary rate per hour refers to Rate; first 5 employees that were hired refers to 5 oldest HireDate;
SELECT T1.Rate FROM EmployeePayHistory AS T1 INNER JOIN Employee AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID INNER JOIN Person AS T3 ON T2.BusinessEntityID = T3.BusinessEntityID ORDER BY T2.HireDate ASC LIMIT 0, 5