URgent: Help regarding SQL Query

Question

Hi ,
I need help regarding an sql query.
Sample Data:
ITEM_TYPE  ITEM_NUM   UNIT_PRICE QUANTITY       LINE_TOTAL
ITEM         1            5         10           50
ITEM         2           10         5            50
ITEM         1            5          5            25
ITEM                       2         10           20
TAX                                               16.5
TAX                                              -3.5I would like to display the data as
ITEM_TYPE ITEM_NUM  UNIT_PRICE          QUANTITY          LINE_TOTAL
ITEM       1          5                 15               145
              2         10                  5 
                          2                 10
TAX                                                          13.0
Line_total = unit_price * QuantityThanks in Advance
G.Vamsi Krishna
Edited by: user10733211 on Aug 5, 2009 7:42 AM
Edited by: user10733211 on Aug 5, 2009 7:49 AM
Edited by: user10733211 on Aug 5, 2009 8:12 AM
Edited by: user10733211 on Aug 5, 2009 8:22 AM
Edited by: user10733211 on Aug 5, 2009 8:24 AM

Answer 1

Hi,
Try this, use some analytics:
SQL> with t as (
  2  select 'item' item_type, 1 item_num, 5 unit_price, 10 quantity, 50 linetotal from dual union all
  3  select 'item', 2, 10, 5, 50 from dual union all
  4  select 'item', 1, 5, 5, 25 from dual union all
  5  select 'item', null, 2, 10, 20 from dual union all
  6  select 'tax', null, null, null, 16.5 from dual union all
  7  select 'tax', null, null, null, -3.5 from dual
  8  ) -- actual query starts here:
  9  select item_type
10  ,      item_num
11  ,      unit_price
12  ,      sum_qty
13  ,      case when sum_lt = lag(sum_lt) over ( order by item_type, item_num )
14              then null
15              else sum_lt
16         end  sum_lt
17  from ( select item_type
18         ,      item_num
19         ,      unit_price
20         ,      quantity
21         ,      sum(quantity) over  ( partition by item_type, item_num ) sum_qty
22         ,      sum(linetotal) over ( partition by item_type )           sum_lt
23         ,      row_number() over ( partition by item_type, item_num  order by item_type, item_num ) rn
24         from   t
25       )
26  where rn=1;
ITEM   ITEM_NUM UNIT_PRICE    SUM_QTY     SUM_LT
item          1          5         15        145
item          2         10          5
item                     2         10
tax                                           13
4 rows selected.
edit
And please use the code tag, instead of clunging with concats.
Read:
http://forums.oracle.com/forums/help.jspa
Edited by: hoek on Aug 5, 2009 5:15 PM
edit2
Also nulls for item_type:
ops$xmt%OPVN> with t as (
  2  select 'item' item_type, 1 item_num, 5 unit_price, 10 quantity, 50 linetotal from dual union all
  3  select 'item', 2, 10, 5, 50 from dual union all
  4  select 'item', 1, 5, 5, 25 from dual union all
  5  select 'item', null, 2, 10, 20 from dual union all
  6  select 'tax', null, null, null, 16.5 from dual union all
  7  select 'tax', null, null, null, -3.5 from dual
  8  ) -- actual query starts here:
  9  select case when item_type = lag(item_type) over ( order by item_type, item_num )
10              then null
11              else sum_lt
12         end  item_type
13  ,      item_num
14  ,      unit_price
15  ,      sum_qty
16  ,      case when sum_lt = lag(sum_lt) over ( order by item_type, item_num )
17              then null
18              else sum_lt
19         end  sum_lt
20  from ( select item_type
21         ,      item_num
22         ,      unit_price
23         ,      quantity
24         ,      sum(quantity) over  ( partition by item_type, item_num ) sum_qty
25         ,      sum(linetotal) over ( partition by item_type )           sum_lt
26         ,      row_number() over ( partition by item_type, item_num  order by item_type, item_num ) rn
27         from   t
28       )
29  where rn=1;
ITEM_TYPE   ITEM_NUM UNIT_PRICE    SUM_QTY     SUM_LT
       145          1          5         15        145
                    2         10          5
                               2         10
        13                                          13
4 rows selected.If you really need a space instead of nulls, then simply replace the nulls by a space....
Edited by: hoek on Aug 5, 2009 5:18 PM