update

myapps/pc_management/api/rent_portal.py

@@ -734,7 +734,7 @@ def run_all_draw_money():
     """
 
     sql = """
-            select sum(real_total) as real_total from (SELECT 
+            select ifnull(sum(real_total),0) as real_total from (SELECT 
                 SUM(tab1.real_total) AS real_total,
                 tab1.bill_date,
                 IFNULL(draw_record.status, - 2) as status,