Help with sql command for inventory cost change report

Question

Inventory Cost Changes within date range.
Columns on report
Item LastDateChanged CurrentCost PriorCost
Source File-TransHst (Type 14 is inventory cost change)
example data
Type,Item,DtChg,Cost
14,15825,02/01/2014,357.00
14,45832,03/15/2014,95725.00
14,15825,10/01/2013,322.00
14,45832,06/22/2012,94632.00
example output needed
Item   LastDateChanged CurrentCost PriorCost
15825     02/01/2014                 357.00               322.00    
Using Crystal Reports 2008 with Oracle Database
I cannot create sql to retrieve data to create report.
Need Item, Last Change Date, Current Cost and Prior Cost as output of sql
Thanks

Answer 1

HI Jerry,
I don't know real syntax of your database, try below SQL, you may have to modify the syntax wherever it is required.
Select t.Item, Max(t.DtChg),(case when year(t.dtchg) = Year(sysdate) then t.Cost else 0) as currentCost,
(case when year(t.dtchg) = Year(sysdate)-1 then t.Cost else 0) as PriorCost
From TransHst t
Where Type=14
Group by t.Item
Thanks,
Sastry