$sql = "SELECT stock_id, SUM(qty) FROM ".TB_PREF."stock_moves WHERE tran_date <= '$date'";
if ($location != '') $sql .= " AND loc_code = ".db_escape($location);
$sql .= " GROUP BY stock_id";
$sql = "SELECT stock_id, SUM(qty) FROM ".TB_PREF."stock_moves WHERE tran_date <= '$date'";
if ($location != '') $sql .= " AND loc_code = ".db_escape($location);
$sql .= " GROUP BY stock_id";