diff --git a/src/exchangedb/pg_lookup_records_by_table.h b/src/exchangedb/pg_lookup_records_by_table.h
new file mode 100644
index 000000000..9dc25fff4
--- /dev/null
+++ b/src/exchangedb/pg_lookup_records_by_table.h
@@ -0,0 +1,49 @@
+/*
+   This file is part of TALER
+   Copyright (C) 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/>
+ */
+/**
+ * @file pg_lookup_records_by_table.h
+ * @brief implementation of the lookup_records_by_table function
+ * @author Christian Grothoff
+ */
+#ifndef PG_LOOKUP_RECORDS_BY_TABLE_H
+#define PG_LOOKUP_RECORDS_BY_TABLE_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+
+
+/**
+ * Lookup records above @a serial number in @a table. Used in
+ * exchange-auditor database replication.
+ *
+ * @param cls closure
+ * @param table table for which we should return the serial
+ * @param serial largest serial number to exclude
+ * @param cb function to call on the records
+ * @param cb_cls closure for @a cb
+ * @return transaction status code, GNUNET_DB_STATUS_HARD_ERROR if
+ *         @a table does not have a serial number
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_lookup_records_by_table (void *cls,
+                                enum TALER_EXCHANGEDB_ReplicatedTable table,
+                                uint64_t serial,
+                                TALER_EXCHANGEDB_ReplicationCallback cb,
+                                void *cb_cls);
+
+
+#endif