Need Help in Pivot of the Columns in Oracle 9i

Question

Hi,
I have a requirement where-in i need to generate the output as below:<<under EXP1 we need to populate the SUM amounts for each category i.e. group by No and Category>>
No Vessel EXP1 EXP2 EXP3 EXP3 .....
1 TEST 10 -8 100 0
2 TEST 11 0 90 -17
And the Code I am using for the same as below:
SELECT Vessel_Code,
           dano,          
           join(cursor(select 'SUM(DECODE(ExpenseCategory,'||''''||expensecategory||''''||',GroupAmount,NULL))'||' '||expensecategory
                       from linetypes
                       where ExpenseCategory NOT IN ('ADV','BANKCHARGES','GAIN/LOSS','NONAGENT')
                       and ExpenseCategory NOT LIKE 'REBILLABLE%'
                       and ExpenseCategory NOT LIKE 'SPECIFIED%'
                       group by expensecategory))
    FROM
    (select     a.Vessel_Code        
    ,           NVL(a.ParentDANo,a.DA_NO) as dano
    ,           b.ExpenseCategory
    ,           sum(NVL(FinalDAAMount,0)+NVL(supplmnt_amount,0)) as GroupAmount
    from  da_head a
    Cross Join LineTypes b
    Left Join   DA_Detail c
    On          a.DA_No     = c.DA_No
    and         a.Credit_Status = c.Credit_Status
    and         b.DALineTypeId = c.DA_LINETYPE_ID
    where status in ('P','G')
    and         b.ExpenseCategory NOT IN ('ADV','BANKCHARGES','GAIN/LOSS','NONAGENT')
    and         b.ExpenseCategory NOT LIKE 'REBILLABLE%'
    and         b.ExpenseCategory NOT LIKE 'SPECIFIED%'
    Group by a.Vessel_Code
    ,           NVL(a.ParentDANo,a.DA_NO)
    ,           b.ExpenseCategory
    Union
    select      a.Vessel_Code
    ,           NVL(a.ParentDANo,a.DA_NO) as dano
    ,           SUBSTR(b.ExpenseCategory,0,Length(b.ExpenseCategory)-1) as ExpenseCategory
    ,           sum(NVL(FinalDAAMount,0)+NVL(supplmnt_amount,0)) as GroupAmount
    from  da_head a
    Cross Join LineTypes b
    Left Join   DA_Detail c
    On          a.DA_No     = c.DA_No
    and         a.Credit_Status = c.Credit_Status
    and         b.DALineTypeId = c.DA_LINETYPE_ID
    where status in ('P','G')
    and         b.ExpenseCategory NOT IN ('ADV','BANKCHARGES','GAIN/LOSS','NONAGENT')
    and         b.ExpenseCategory LIKE 'SPECIFIED%'
    Group by a.Vessel_Code
    ,           NVL(a.ParentDANo,a.DA_NO)
    ,           SUBSTR(b.ExpenseCategory,0,Length(b.ExpenseCategory)-1)
    Union
    select      a.Vessel_Code
    ,           NVL(a.ParentDANo,a.DA_NO) as dano
    ,           SUBSTR(b.ExpenseCategory,0,Length(b.ExpenseCategory)-1) as ExpenseCategory
    ,           sum(NVL(FinalDAAMount,0)+NVL(supplmnt_amount,0)) as GroupAmount
    from  da_head a
    Cross Join LineTypes b
    Left Join   DA_Detail c
    On          a.DA_No     = c.DA_No
    and         a.Credit_Status = c.Credit_Status
    and         b.DALineTypeId = c.DA_LINETYPE_ID
    where status in ('P','G')
    and         b.ExpenseCategory NOT IN ('ADV','BANKCHARGES','GAIN/LOSS','NONAGENT')
    and         b.ExpenseCategory LIKE 'REBILLABLE%'
    Group by a.Vessel_Code
    ,           NVL(a.ParentDANo,a.DA_NO)
    ,           SUBSTR(b.ExpenseCategory,0,Length(b.ExpenseCategory)-1)
    GROUP BY Vessel_Code,
    dano
    order by dano;The reason why I have been using the join(cursor(.....) to get the result set as :
SUM(DECODE(ExpenseCategory,'OWNER',GroupAmount,NULL)) OWNER,
           SUM(DECODE(ExpenseCategory,'CTM',GroupAmount,NULL)) CTM,
           SUM(DECODE(ExpenseCategory,'PORT',GroupAmount,NULL)) PORT,
           SUM(DECODE(ExpenseCategory,'REBILLABLE',GroupAmount,NULL)) REBILLABLE,
           SUM(DECODE(ExpenseCategory,'SPECIFIED',GroupAmount,NULL)) SPECIFIED,
           SUM(DECODE(ExpenseCategory,'CARGO',GroupAmount,NULL)) CARGO,
           SUM(DECODE(ExpenseCategory,'ACCTTEMP',GroupAmount,NULL)) ACCTTEMPAs we don't know the exact number of expense categories to be displayed I have used cursor excluding the expense categories I don't need.When I run the same as individual query I get the correct result but when I execute it along with the query I get error maximum cursors open exceeded...
Please let me know how can it be achieved.
Any suggestions are welcome.
Thanks,
Hemanth

Answer 1

The easiest way to do this, and it could be done in a few minutes, would be to move to a currently supported version of Oracle, 11gR1 or 11gR2, where we have the PIVOT and UNPIVOT operators.
In the desupported version you have the best choice is to hit http://asktom.oracle.com and look up the solution he published there some years ago.
I don't have the link so you can find it as fast as I can but look under "pivot" and "crosstab."