cp sql/ from GNU Taler exchange

include/sql/0002-kyc_events.sql

@@ -0,0 +1,31 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2024 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/>
+--
+
+CREATE TABLE kyc_events (
+  kyc_event_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY
+ ,event_timestamp INT8 NOT NULL
+ ,event_type TEXT NOT NULL
+);
+
+COMMENT ON TABLE kyc_events
+  IS 'Records of key events for statistics. Populated via triggers.';
+COMMENT ON COLUMN kyc_events.event_type
+  IS 'Name of the event, such as account-open or sar-filed';
+COMMENT ON COLUMN kyc_events.event_timestamp
+  IS 'When did the event occur; timestamp in rounded absolute time';
+
+CREATE INDEX kyc_event_index
+  ON kyc_events(event_type,event_timestamp);