cp sql/ from GNU Taler exchange

include/sql/0002-denomination_revocations.sql

@@ -0,0 +1,23 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2014--2022 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 IF NOT EXISTS denomination_revocations
+  (denom_revocations_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY UNIQUE
+  ,denominations_serial INT8 PRIMARY KEY REFERENCES denominations (denominations_serial) ON DELETE CASCADE
+  ,master_sig BYTEA NOT NULL CHECK (LENGTH(master_sig)=64)
+  );
+COMMENT ON TABLE denomination_revocations
+  IS 'remembering which denomination keys have been revoked';