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+--
+-- 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 OR REPLACE FUNCTION create_table_contracts(
+ IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+ table_name VARCHAR DEFAULT 'contracts';
+BEGIN
+
+ PERFORM create_partitioned_table(
+ 'CREATE TABLE IF NOT EXISTS %I '
+ '(contract_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY' --UNIQUE
+ ',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
+ ',pub_ckey BYTEA NOT NULL CHECK (LENGTH(pub_ckey)=32)'
+ ',contract_sig BYTEA NOT NULL CHECK (LENGTH(contract_sig)=64)'
+ ',e_contract BYTEA NOT NULL'
+ ',purse_expiration INT8 NOT NULL'
+ ',PRIMARY KEY (purse_pub)'
+ ') %s ;'
+ ,table_name
+ ,'PARTITION BY HASH (purse_pub)'
+ ,shard_suffix
+ );
+
+END
+$$;
+
+CREATE OR REPLACE FUNCTION add_constraints_to_contracts_partition(
+ IN partition_suffix VARCHAR
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+ EXECUTE FORMAT (
+ 'ALTER TABLE contracts_' || partition_suffix || ' '
+ 'ADD CONSTRAINT contracts_' || partition_suffix || '_contract_serial_id_key '
+ 'UNIQUE (contract_serial_id) '
+ );
+END
+$$;