Dynamically growing columns

Question

Hi,
I'm using forms6i.
I have a holiday calendar table, Cal_header, having columns empcode,leavetype,Date et...
Which contains all the holidays available for an employee for a whole year.
Now i need to provide, one screen to query. The i/ps can be Employee, and duration.
So if i/p are Employee: '1' and duration: from 01-mar-2011 to 31-mar-2011.
For this i/p , suppose we got few record from holiday calendar like
Employee          Leavetype                  Date
1                      Friday               02-mar-2011
1                      Saturday           03-mar-2011
1                      Natday              16-mar-2011
1                      friday                09-mar-2011
etc...So the query screen i'm providing should display these data like
Employee        01/mar/2011   02/mar/2011.........   09/mar/2011   10/mar/2011........16/mar/2011......31/mar/2011
1                             Friday                    Friday                        NatdayI have no idea how to approach this.How can this be done!?
Please help
Thanks

Answer 1

Thanks for the link.
Based on that i've created a from-clause query in the form.
But at runtime i'm getting exception
SELECT CAL_EMP_CODE,DT1,DT2,DT3,DT4,DT5,DT6,DT7,DT8,DT9,DT10,DT11,DT12,DT13,DT14
FROM (Select ech_emp_code cal_emp_code,max(decode(to_char(ech_date,'dd-MON-YYYY'),'01-APR-2011',ech_CODE)) DT1,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'02-APR-2011',ech_CODE)) DT2,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'03-APR-2011',ech_CODE)) DT3,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'04-APR-2011',ech_CODE)) DT4,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'05-APR-2011',ech_CODE)) DT5,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'06-APR-2011',ech_CODE)) DT6,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'07-APR-2011',ech_CODE)) DT7,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'08-APR-2011',ech_CODE)) DT8,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'09-APR-2011',ech_CODE)) DT9,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'10-APR-2011',ech_CODE)) DT10,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'11-APR-2011',ech_CODE)) DT11,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'12-APR-2011',ech_CODE)) DT12,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'13-APR-2011',ech_CODE)) DT13,
max(decode(to_char(ech_date,'dd-MON-YYYY'),'14-APR-2011',ech_CODE)) DT14
from (Select * from emp_cal_header
        where ech_date between *2011/04/01 00:00:00* and *2011/04/14 00:00:00* order by ech_Date)
        group by ech_emp_code) i'm getting Error: ORA-00905: missing keyword.
The bold characters(sorry it didn look bold, so the data betweem two *s) are the i/p from user, accepted using two Date items through form.
Please help