cp sql/ from GNU Taler exchange

include/sql/exchange_do_select_aggregations_above_serial.sql

@@ -0,0 +1,72 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2023 Taler Systems SA
+--
+-- TALER is free software; you can redistribute it and/or modify it under the
+-- terms of the GNU General Public License as published by the Free Software
+-- Foundation; either version 3, or (at your option) any later version.
+--
+-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+--
+-- @author: Christian Grothoff
+
+CREATE OR REPLACE FUNCTION exchange_do_select_aggregations_above_serial(
+  IN in_min_serial_id INT8)
+RETURNS SETOF exchange_do_select_aggregations_above_serial_return_type
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  aggregation CURSOR
+  FOR
+  SELECT
+    batch_deposit_serial_id
+   ,aggregation_serial_id
+    FROM aggregation_tracking
+    WHERE aggregation_serial_id >= in_min_serial_id
+    ORDER BY aggregation_serial_id ASC;
+DECLARE
+  my_total_val INT8; -- all deposits without wire
+DECLARE
+  my_total_frac INT8; -- all deposits without wire (fraction, not normalized)
+DECLARE
+  my_total taler_amount; -- amount that was originally deposited
+DECLARE
+  my_batch_record RECORD;
+DECLARE
+  i RECORD;
+BEGIN
+
+OPEN aggregation;
+LOOP
+  FETCH NEXT FROM aggregation INTO i;
+  EXIT WHEN NOT FOUND;
+
+  SELECT
+    SUM((cdep.amount_with_fee).val) AS total_val
+   ,SUM((cdep.amount_with_fee).frac::INT8) AS total_frac
+    INTO
+      my_batch_record
+    FROM coin_deposits cdep
+    WHERE cdep.batch_deposit_serial_id = i.batch_deposit_serial_id;
+
+  my_total_val=my_batch_record.total_val;
+  my_total_frac=my_batch_record.total_frac;
+
+  -- Normalize total amount
+  my_total.val = my_total_val + my_total_frac / 100000000;
+  my_total.frac = my_total_frac % 100000000;
+  RETURN NEXT (
+       i.batch_deposit_serial_id
+      ,i.aggregation_serial_id
+      ,my_total
+      );
+
+END LOOP;
+CLOSE aggregation;
+RETURN;
+END $$;