res = PQprepare(thread_data[i].conn, "index_placex",
"update placex set indexed_status = 0 where place_id = $1",
1, pg_prepare_params);
res = PQprepare(thread_data[i].conn, "index_placex",
"update placex set indexed_status = 0 where place_id = $1",
1, pg_prepare_params);