How to change the query ?

Question

Gurus,
Please clarify this
Select ils.item,(nvl(sum(decode(tdh.loc_type,'S',decode(tdh.tran_code, 1,tdh.units,0),
'W',decode(tdh.tran_code,30,0,31,0,32, tdh.units,33, tdh.units,37,0,38, tdh.units,20,0,1,0))),0))"result"
from tran_data_history tdh, item_loc_soh ils
where tdh.item = ils.item
and ils.item in('100002513','100002484')
and trunc(tdh.TRAN_DATE)
between (*select first_date from (select item,min(trunc(first_received)) first_date From Item_loc_soh*
where item in('100002513','100002484') and first_received is not null
group by item ))
and trunc(sysdate)
group by ils.item
Problem with this query is, the block mentioned in BOLD is returning two rows, and I am writing between and clause .. since the query in bold is returning more than one row, it is throwing error stating that single query returns more than one row .. Requirement is, whatever date which is returned with value 100002513 should be compared with sysdate, and other value 100002484 should be compared with sysdate .. Irrespective of number of items (whether 1 or more than 1) should simultaneously be compared with sysdate
How to change my query
Regards

Answer 1

Inner query
Select First_Date From (Select Item, Min(Trunc(First_Received)) First_Date
                                    From Item_Loc_Soh *
                                    Where Item In ('100002513', '100002484')
                                    And First_Received Is Not Null
                                    Group By Item)
this will return 2 rows for each of the item id 2513 and 2484 because you write query for this 2 rows
and select min date
which means
item id 2513  min date
item id 2482  min date
if you want to compare just a date to sysdate then do it directly,
Select Ils.Item,
       (Nvl(Sum(Decode(Tdh.Loc_Type,
                       'S',
                       Decode(Tdh.Tran_Code, 1, Tdh.Units, 0),
                       'W',
                       Decode(Tdh.Tran_Code,
                              30,
                              0,
                              31,
                              0,
                              32,
                              Tdh.Units,
                              33,
                              Tdh.Units,
                              37,
                              0,
                              38,
                              Tdh.Units,
                              20,
                              0,
                              1,
                              0))),
            0)) "result"
  From Tran_Data_History Tdh, Item_Loc_Soh Ils
Where Tdh.Item = Ils.Item
   And Ils.Item In ('100002513', '100002484')
   And Trunc(First_Received)  = Sysdate;
however i dont understand importance of Tdh.Tran_Date and which date you exactly want to compare
hope this helps,
if not plz clarify more on the questionsEdited by: Nicloei W on Sep 24, 2008 11:51 PM