sql="SELECT item_code, rm_cost, pm_cost, other_costs, effective_from_date, valid_upto_date, cost_per_unit FROM costing_mst WHERE item_code = ? ORDER BY effective_from_date DESC";
sql="SELECT cm.item_code, it.descr, cm.rm_cost, cm.pm_cost, cm.other_costs, cm.effective_from_date, cm.valid_upto_date, cm.cost_per_unit FROM costing_mst cm LEFT JOIN item it ON cm.item_code = it.item_code WHERE cm.item_code = ? ORDER BY effective_from_date DESC";
sql="SELECT item_code, rate, eff_from, valid_upto, curr_code, previous_nrv FROM pricelist WHERE item_code = ? ORDER BY eff_from DESC";
sql="SELECT prt.item_code,it.descr,prt.rate, prt.eff_from, prt.valid_upto, prt.curr_code, prt.previous_nrv FROM pricelist prt left join item it on prt.item_code= it.item_code WHERE prt.item_code = ? ORDER BY eff_from DESC";