A drillthrough report is a report that a user opens by clicking a link
within another report. Drillthrough reports commonly contain details about an
item that is contained in an original summary report. The data in the
drillthrough report is not retrieved until user click on the link in the main
report.
Step by Step process to create Drill through report.
Two reports are required to create, Summery and Details report
Step 1:
First Create the Details Report.
I have used the example from AdventureWorksDW2017 database.
Create the Parameter: Product Name . This will accept the value passed
from the summery report. Make the visibility property to Hidden.
Create the data set which contains details of Product, Sales Order, Sales
amount and sales country details.
SELECT Prod.EnglishProductName AS ProductName,Fact.SalesOrderNumber, Fact.SalesAmount,