Question

for example I have data as found in the table below

tabel order

-----------------------------------------
   id_order    no_order       order_date
-----------------------------------------
     1         0000001       12-01-2013
     2         0000002       15-01-2013
-----------------------------------------

tabel item_order

--------------------------------------------------
   id_item_order       id_order      order_name
--------------------------------------------------
       1                 2           Product 1
       2                 2           Product 2
       3                 2           Product 3
       4                 2           Product 4
--------------------------------------------------

then I want to display the data from database with join as below

--------------------------------------------------
  id_item_order     order_name       no_order
--------------------------------------------------
      1             Product 1        0000002 A
      2             Product 2        0000002 B
      3             Product 3        0000002 C
      4             Product 4        0000002 D
--------------------------------------------------

how to display the character “A – n” located behind no_order according to the amount of data that relate item_order with id_order in table order?

please help me. thank you

Answer 1

SQL Fiddle for testing

select i.id_item_order, i.id_order,
        o.no_order || chr(rownum + 64) as no_order
from item_order i
inner join "order" o on o.id_order = i.id_order;