Create calculate-salaries.sql

Author: kamyu104

MySQL/calculate-salaries.sql

@@ -0,0 +1,19 @@
+# Time:  O(m + n)
+# Space: O(m + n)
+
+SELECT s.company_id,
+       s.employee_id,
+       s.employee_name,
+       ROUND(s.salary * t.rate) salary
+FROM Salaries s
+INNER JOIN
+  (SELECT company_id,
+          CASE
+              WHEN MAX(salary) < 1000 THEN 1.0
+              WHEN MAX(salary) <= 10000 THEN 0.76
+              ELSE 0.51
+          END AS rate
+   FROM Salaries
+   GROUP BY company_id
+   ORDER BY NULL) t ON s.company_id = t.company_id;
+