Group by Lookup function result

Question

I have a report that uses two datasets.
The first one looks like this. It's the time members have recorded under a particular job title:
ParentId TaskName ObjectiveId MemberId JobTitle TimeSpent Status
3174ED19 TEST 3 42AA79F6 23179C0F NULL 0.00 01
3174ED19 TEST 3 42AA79F6 596CA495 JobTitle1 9.00 01
3174ED19 TEST 1 AEE18C46 23179C0F NULL 0.00 01
3174ED19 TEST 1 AEE18C46 596CA495 JobTitle2 3.00 01
3174ED19 TEST 2 AEE18C46 23179C0F NULL 0.00 01
3174ED19 TEST 2 AEE18C46 596CA495 6.00 01
I need to show the records which have JobTitle == null with a particular Job Title, the current one they have in Active Directory. So I use another dataset from a WCF service:
MemberId Name JobTitle
23179C0F Member1 JobTitle1
Then I use a lookup function to show the correct Job Title:
=IIF(IsNothing(Fields!JobTitle.Value) OR Fields!JobTitle.Value = "",lookup(Fields!MemberId.Value,Fields!MemberId.Value,Fields!JobTitle.Value,"Members"),Fields!JobTitle.Value)
This works ok. The problem is that I need the data to be grouped by several fields, including the Job Title. It seems grouping happens before the lookup function is executed, so instead of grouping the NULL values along with the fields that contains the actual
values, I end up with two groups with the same Job Title, one containing the null values and another with the actual values.
Is there any workaround for this?
Thanks.

Answer 1

Hi EXR88,
Per my understanding that you have add some row group in the report to group the result which include the JobTitle from the table1 and also group by the field which result comes from the lookup funtion, now the issue is the group by the Lookup function result
isn't correct, right?
I have tested on my local envoronment and can't reproduce the issue, please find the details information below to make sure you have done the correct setting:
I tried to create the two tables like below:
Table1:
 Have the same recores as you provided above.
Table2:
MemberId    Name      JobTitle
23179C0F   Member1    JobTitle1
596CA495   Member1      NULL
After adding the LookUP function, i got the report like below:
I add two row group base on the JobTitle(JobTitle) and the Lookup functiuon result(Lookupfunctiongroup), the Lookupfunctiongroup row group is the child group of the JobTitle like below, please make sure you have add the expression with the lookupfunction
in the group on:
If i have some misunderstanding, please try to provide the expectted group by  result you want to get and also the currectly result you have got.
Any problem, please feel free to ask.
Regards,
Vicky Liu
Vicky Liu
TechNet Community Support