Help Needed With Calculating Average For Both Parent And Child Rows

I am trying to create a SSRS report that needs to show average for both parent and child rows. In the example below i need to show an average of ErrorRecAge column for Company, then for cic_Group and one grand total/avg. How can this be done from single query (as below) and using SSRS built in functions/codes? I am also curious to know if this can be done from TSQL directly (ex. something similar to running sum/total). I appreciate the help.


Select


CustomerCorrection.Id As ParentId,

cc_company As cc_company2,

ccError.Id As ErrorId,

COALESCE(cic_Group,'Other Errors') As cic_Group,

COALESCE(cic_Code,'Unknown') As ErrorCode,COALESCE(cic_Description,'Unknown') As ErrorDescription,

DateDiff(hh,cc_entrydt,getdate())/24.00 AS ErrorRecAge

From


CustomerCorrection Inner Join CCError On

CustomerCorrection.Id = CCError.CustomerCorrectionId

Left Outer Join CustomerImportControl On

cic_code = ce_errno

Where cc_company = 'IWA' And CustomerCorrection.Id In (129,1004,3228)

Order By CustomerCorrection.Id



That Returns
129 IWA 992 Other Errors Unknown Unknown 399.500000
129 IWA 1089 Other Errors Unknown Unknown 399.500000
129 IWA 1760 Other Errors Unknown Unknown 399.500000
1004 IWA 952 Other Errors Unknown Unknown 365.333333
1004 IWA 1853 Other Errors Unknown Unknown 365.333333
3228 IWA 10 Other Errors Unknown Unknown 329.375000

Here is my temp workaround:

Select a.*,b.*

From


(

Select

cc_Company, Count(Distinct CustomerCorrection.Id) as RecCount, Avg(DateDiff(hh,cc_entrydt,getdate()))/24.00 As RecAge

From

CustomerCorrection

Group By cc_Company

) As a

Inner Join


(

Select

cc_company As cc_company2,

COALESCE(cic_Group,'Other Errors') As cic_Group,

Count(Distinct ccError.Id) As ErrorRecCount,

AVG(DateDiff(hh,cc_entrydt,getdate()))/24.00 As ErrorRecAge

From

CustomerCorrection Inner Join CCError On

CustomerCorrection.Id = CCError.CustomerCorrectionId

Left Outer Join CustomerImportControl On

cic_code = ce_errno

Group By cc_company, COALESCE(cic_Group,'Other Errors')

) as b

On a.cc_company = b.cc_company2

Order By cc_Company,cic_group