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diff --git a/src/exchangedb/pg_iterate_active_auditors.c b/src/exchangedb/pg_iterate_active_auditors.c
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+/*
+ 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 exchangedb/pg_iterate_active_auditors.c
+ * @brief Implementation of the iterate_active_auditors function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_iterate_active_auditors.h"
+#include "pg_helper.h"
+
+
+/**
+ * Closure for #auditors_cb_helper()
+ */
+struct AuditorsIteratorContext
+{
+ /**
+ * Function to call with the results.
+ */
+ TALER_EXCHANGEDB_AuditorsCallback cb;
+
+ /**
+ * Closure to pass to @e cb
+ */
+ void *cb_cls;
+
+};
+
+
+/**
+ * Helper function for #TEH_PG_iterate_active_auditors().
+ * Calls the callback with each auditor.
+ *
+ * @param cls a `struct SignkeysIteratorContext`
+ * @param result db results
+ * @param num_results number of results in @a result
+ */
+static void
+auditors_cb_helper (void *cls,
+ PGresult *result,
+ unsigned int num_results)
+{
+ struct AuditorsIteratorContext *dic = cls;
+
+ for (unsigned int i = 0; i<num_results; i++)
+ {
+ struct TALER_AuditorPublicKeyP auditor_pub;
+ char *auditor_url;
+ char *auditor_name;
+ struct GNUNET_PQ_ResultSpec rs[] = {
+ GNUNET_PQ_result_spec_auto_from_type ("auditor_pub",
+ &auditor_pub),
+ GNUNET_PQ_result_spec_string ("auditor_url",
+ &auditor_url),
+ GNUNET_PQ_result_spec_string ("auditor_name",
+ &auditor_name),
+ GNUNET_PQ_result_spec_end
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_PQ_extract_result (result,
+ rs,
+ i))
+ {
+ GNUNET_break (0);
+ return;
+ }
+ dic->cb (dic->cb_cls,
+ &auditor_pub,
+ auditor_url,
+ auditor_name);
+ GNUNET_PQ_cleanup_result (rs);
+ }
+}
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_iterate_active_auditors (void *cls,
+ TALER_EXCHANGEDB_AuditorsCallback cb,
+ void *cb_cls)
+{
+ struct PostgresClosure *pg = cls;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_end
+ };
+ struct AuditorsIteratorContext dic = {
+ .cb = cb,
+ .cb_cls = cb_cls,
+ };
+
+ PREPARE (pg,
+ "select_auditors",
+ "SELECT"
+ " auditor_pub"
+ ",auditor_url"
+ ",auditor_name"
+ " FROM auditors"
+ " WHERE"
+ " is_active;");
+
+ return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+ "select_auditors",
+ params,
+ &auditors_cb_helper,
+ &dic);
+}