fix: fixed sum of all account at once in sum_by_category

Author: Antenaina2002

src/main/resources/migrations/function_sum_by_category.txt

@@ -1,14 +1,14 @@
 CREATE OR REPLACE FUNCTION sum_by_category(start_date DATE, end_date DATE)
-RETURNS TABLE(category_id bigserial, total_amount DOUBLE PRECISION)
+RETURNS TABLE(account_id bigint, category_id bigint, total_amount DOUBLE PRECISION) 
 AS $$
 BEGIN
   RETURN QUERY
-    SELECT category.id, SUM(transaction.amount) as total_amount
-    FROM transaction
-    JOIN category ON transaction.category = category.id
-    WHERE transaction.created_at BETWEEN start_date AND end_date
-    GROUP BY category.id
-    ORDER BY total_amount DESC;
+    SELECT t.id_account, c.id AS category_id, SUM(t.amount) AS total_amount
+    FROM transaction t
+    JOIN category c ON t.category = c.id
+    WHERE t.created_at BETWEEN start_date AND end_date
+    GROUP BY t.id_account, c.id
+    ORDER BY t.id_account, total_amount DESC;
 END;
 $$
 LANGUAGE plpgsql;