Oracle SQl query to find date range based on another cloumn value

Question

Hi Folks,
I want to extract records for the employees who have consecutive vacation/leave from a table. If an emp has vacation of 3 days (MON-WED), the table contains 3 distinct records for him,
e.g. My table contains records as shown below.
EmpName Paycode ApplyDate Amt. of Hrs
emp1 vacation 5/1/2010 8
emp1 vacation 5/2/2010 8
emp1 vacation 5/3/2010 8
I am trying to get the output like this...
Emp Name Paycode Leave Start Date Leave End Date TotalHrs
emp1 vacation 5/1/2010 5/3/2010 24
Note: If the smae emp has sets of vacation in another month, that should come as a separate record with start date and end date(last date of vacation for that set).
I have a query which does not return any rows. Any help to repair this query or any better one would be of great help.
==================================================================
WITH vpt AS (
select personnum as empname, paycodename as paycode, applydate, timeinseconds/3600 as numhours from VP_TOTALS
where applydate between to_date('05/01/2010','MM/DD/YYYY') AND to_date('12/31/2010','MM/DD/YYYY')
AND paycodename in ('US-Vacation','US-Bereavement','US-Sick','US-Jury Duty')
select
empname,
paycode,
min(applydate) as startdate,
max(applydate) as enddate,
sum(numhours) as totalhours
from (
select
empname,
paycode,
applydate,
numhours,
-- number the blocks sequentially
sum(is_block_start) over (partition by empname, paycode order by applydate) as block_num
from (
select
empname,
paycode,
applydate,
numhours,
-- Mark the start of each block
case
when applydate = prev_applydate + 1 then 0 else 1 end as is_block_start
from (
select
empname,
paycode,
applydate,
numhours,
lag (applydate) over (partition by empname, paycode order by applydate) prev_applydate
from vpt
group by empname, paycode, block_num
===================================================================
Thanks,
Maha

Answer 1

Hi Dear,
Can I do reverse I mean I can get output as your question from your output as below:
I have this table
FID      STARTD ATE END DATE
1 01-MAY-10 03-MAY-10
1 09-MAY-10 11-MAY-10
1 03-JUN-10 04-JUN-10
2 03-JUN-10 04-JUN-10
2 04-AUG-10 04-AUG-10
2 06-AUG-10 06-AUG-10
I want like this.
FID FDATE
1 01-MAY-10
1 02-MAY-10
1 03-MAY-10
1 09-MAY-10
1 10-MAY-10
1 11-MAY-10
1 03-JUN-10
1 04-JUN-10
2 03-JUN-10
2 04-JUN-10
2 04-AUG-10
2 06-AUG-10
And:
How can i get date wise entry from Joining date to relieving date like..
FID      START DATE END DATE
1 01-MAY-10 03-MAY-12
1 09-MAY-10 11-MAY-11
2 04-AUG-10 04-AUG-11
I want like this.
FID FDATE
1 01-MAY-10
1 03-MAY-10
1 04-MAY-10
1 05-MAY-10
1 16-MAY-10
1 17-MAY-10
1 08-May-10
1 09-May-10
1 03-May-12
Can you please help me.
Thanks,
Edited by: 978452 on Dec 24, 2012 12:02 AM