function getTransactions($category, $location)
{
    $sql = "SELECT item.category_id,
            category.description AS cat_description,
            item.stock_id, item.units,
            item.description, item.inactive,
            IF(move.stock_id IS NULL, '', move.loc_code) AS loc_code,
            SUM(IF(move.stock_id IS NULL,0,move.qty)) AS qty_on_hand
        FROM ("
            .TB_PREF."stock_master item,"
            .TB_PREF."stock_category category)
            LEFT JOIN ".TB_PREF."stock_moves move ON item.stock_id=move.stock_id
        WHERE item.category_id=category.category_id
        AND (item.mb_flag='B' OR item.mb_flag='M')";
    if ($category != 0)
        $sql .= " AND item.category_id = ".db_escape($category);
    if ($location != 'all')
        $sql .= " AND IF(move.stock_id IS NULL, '1=1',move.loc_code = ".db_escape($location).")";

    $sql .= " GROUP BY item.category_id,
        category.description,
        item.stock_id,
        item.description
        ORDER BY item.category_id,
        item.stock_id";

    return db_query($sql,"No transactions were returned");

}