query from vertical to horizontal
id item_desc period qty
1 x jan 4
1 x feb 3
1 x mar 2
2 y jan 6
2 y feb 7
2 y mar 4
i want make from this data a query and the result is as:
id item_des jan feb mar
1 x 4 3 2
2 y 6 7 4
thanks