修改

backend/app/payroll/bonus/service.py

@@ -58,12 +58,15 @@ class BonusCalculationService:
                 cur.execute(
                     """
                     SELECT AVG(total_payment - commute_allowance) as avg_salary
-                    FROM monthly_payroll 
-                    WHERE employee_id = %s
-                    AND payment_date < %s
-                    AND status IN ('approved', 'paid')
-                    ORDER BY payment_date DESC
-                    LIMIT 3
+                    FROM (
+                        SELECT total_payment, commute_allowance
+                        FROM monthly_payroll 
+                        WHERE employee_id = %s
+                        AND payment_date < %s
+                        AND status IN ('approved', 'paid')
+                        ORDER BY payment_date DESC
+                        LIMIT 3
+                    ) as recent_payroll
                     """,
                     (employee_id, payment_date)
                 )