Show available balance including activities of this month

postgres/queries/categories.sql

@@ -26,16 +26,16 @@ SELECT categories.id, categories.name, category_groups.name as group,
             SELECT SUM(a_hist.amount)
             FROM assignments a_hist
             WHERE categories.id = a_hist.category_id 
-            AND a_hist.date < @from_date
+            AND a_hist.date < @to_date
         )
     , 0)+COALESCE(
         (
             SELECT SUM(t_hist.amount)
             FROM transactions t_hist
             WHERE categories.id = t_hist.category_id 
-            AND t_hist.date < @from_date
+            AND t_hist.date < @to_date
         )
-    , 0))::decimal(12,2) as balance, 
+    , 0))::decimal(12,2) as available, 
     COALESCE(
         (
             SELECT SUM(t_this.amount)