How to figure out if the bottom 2 lines in each group has the same value in specific columns?

Question

Hi, I need help to finish my project ASAP. My task is to figure out defects in this Loan_Status_Tbl. 
When Current_Principal= 0, Loan_status should be populated from previous records. For example, when Loan_Nbr 00001's current_Principal=0, it's loan_status is not populated from it's 2010-12-30 record, and 00002 is good. I want to know which items are not
good, and report the results to engineer to modify the wrong record in DW. 
ID      LOAN_NBR    CURRENT_PRINCIPAL                           LOAD_DT              LOAN_STATUS
1        00001           1000                            2010-12-5     APPROVED
2        00001           800                              2010-12-30   APPROVED
3        00001           0                                  2011-3-1        NULL        
4        00002           500                              2012-5-1        APPROVED
5        00002           0                                  2012-6-12      APPROVED

Answer 1

Hi,
If I understand correctly, you want to highlight the records that have incorrect Loan_status values.
To achieve this requirement, we can create a table with the table data, then add a column with correct Loan_status value in a report. Compare the Loan_status column and new column to find out the incorrect values, then highlight it. The following detail
steps are for your references:
Create a report in a SQL Server Reporting Services Project.
Create a dataset with the sample data.
Drag a Table with the dataset to design surface.
Add a group grouped by LOAN_NBR, then insert all the fields to the table.
Right-click the LOAN_STATUS column to add a new column with Right option, then insert the expression as below:
=iif(Fields!CURRENT_PRINCIPAL.Value="0",previous(Fields!LOAN_STATUS.Value),Fields!LOAN_STATUS.Value)
Click second row to change its BackgroundColor property as below, then the incorrect Loan_status value row will be highlighted:
=iif(Fields!LOAN_STATUS.Value=iif(Fields!CURRENT_PRINCIPAL.Value="0",previous(Fields!LOAN_STATUS.Value),Fields!LOAN_STATUS.Value),"Transparent","Red")
The following screenshot is for your reference:
Reference:
Create a Basic Table Report (SSRS Tutorial)
If there are any other questions, please feel free to ask.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support