Inserting the default value for non existing date

Question

hello,
i am designing a matrix report for payslip for month wise in oracle 6i report builder.
in that i want to display per day working hours of the month.
i m using following query for achieving my goal :
select a.paycode,b.empname,c.departmentname,to_char(a.dateoffice,'DD') dateoffice,a.shiftattended,round(decode(a.hw,0,a.mannual_hours,a.hw),0) hw,
a.ISMANNUAL,A.STATUS
from tbltimeregister1 a,
     tblemployee  b,
      tbldepartment c
where a.paycode=b.paycode and
(a.hw >0 or a.mannual_hours is not null ) and
a.departmentcode='D05' AND
a.departmentcode=c.departmentcode and
a.dateoffice between to_date('01/12/2012','dd/mm/yyyy') and to_date('31/12/2012','dd/mm/yyyy')
ORDER BY A.PAYCODE,A.DATEOFFICEit is displaying the hours for the date in b/w date ranges exist in master table.
my problem is that if any date of a month is not in master data ,it should display the given date in DD format with 0 hours , A(absent) status, and null shift by default.
pl tell me how to modify my query for getting my desirable result.
Thanking You
Regards
Vishal Agrawal

Answer 1

965354 wrote:
hello,
select a.paycode,b.empname,c.departmentname,to_char(a.dateoffice,'DD') dateoffice,a.shiftattended,round(decode(a.hw,0,a.mannual_hours,a.hw),0) hw,
a.ISMANNUAL,A.STATUS
from tbltimeregister1 a,
tblemployee  b,
      tbldepartment c
where a.paycode=b.paycode and
(a.hw >0 or a.mannual_hours is not null ) and
a.departmentcode='D05' AND
a.departmentcode=c.departmentcode and
a.dateoffice between to_date('01/12/2012','dd/mm/yyyy') and to_date('31/12/2012','dd/mm/yyyy')
ORDER BY A.PAYCODE,A.DATEOFFICEit is displaying the hours for the date in b/w date ranges exist in master table.
my problem is that if any date of a month is not in master data ,it should display the given date in DD format with 0 hours , A(absent) status, and null shift by default.
pl tell me how to modify my query for getting my desirable result.Your problem isn't exactly clear to me. How do you pass the dates to be compared to the DateOffice column? It will be better to ensure the Master table contain data for each date (with some default values) and you will not have to tweak your sql.
Below is a possible solution:
select *
  from
select a.paycode,b.empname,c.departmentname,to_char(a.dateoffice,'DD') dateoffice,a.shiftattended,round(decode(a.hw,0,a.mannual_hours,a.hw),0) hw,
a.ISMANNUAL,A.STATUS
from tbltimeregister1 a,
     tblemployee  b,
      tbldepartment c
where a.paycode=b.paycode and
(a.hw >0 or a.mannual_hours is not null ) and
a.departmentcode='D05' AND
a.departmentcode=c.departmentcode and
a.dateoffice between to_date('01/12/2012','dd/mm/yyyy') and to_date('31/12/2012','dd/mm/yyyy')
union
select a.paycode,b.empname,c.departmentname,to_char(&date_variable,'DD') dateoffice,null,round(decode(a.hw,0,a.mannual_hours,a.hw),0) hw,
a.ISMANNUAL,'A'
from tbltimeregister1 a,
     tblemployee  b,
      tbldepartment c
where a.paycode=b.paycode and
(a.hw >0 or a.mannual_hours is not null ) and
a.departmentcode='D05' AND
a.departmentcode=c.departmentcode and
ORDER BY A.PAYCODE,A.DATEOFFICEIf this is not what you are looking for, then
1. Post a script that helps us to create the Tables required in your query
2. Some sample data. That includes the data for master table that has missing dates (4-5 rows should suffice)
3. The expected results from the sample data you posted.
Please do not forget to mention your version:
select * from v$version;