Creating custom Column in IDT 4.1

Question

Hi All,
I am using SAP IDT 4.1 SP03 to build a business layer over a SQL Server database using relational connection.
I having a single table named CUSTOMER and it contains Customer ID, Customer Name,  City, SubscribeForEmail and date column. I want to filter the data on specific date range to view the data on below format:
City
Total Customers
Customers subscribed for email only
I have created the measure in business layer and filter customer count based on subscribeforemail flag. But IDT is showing invalid data. For ex:
Database Table:
Customer ID
Customer Name
City
SubscribeForEmail
Date
1
Customer 1
City1
Y
1/1/2014
2
Customer 2
City2
Y
1/1/2014
3
Customer 3
City1
Y
1/1/2014
4
Customer 4
City1
N
1/1/20014
Data returned By IDT:
City
Total Customers
Email Only
City1
2
2
Kindly guide.

Answer 1

Hi Sreenivasulu,
I have created two measures in business layer based on below format:
Measure1: Total Customers = Count(DISTINCT Customer_ID)
Measure2:  Email Customers = Count(DISTINCT Customer_ID)
                                                   Where SubscribeForEmail = 'Y'
The query generated is:
SELECT
     Table_3."City",
     count( Distinct (Table_3."Customer_ID")),
     count( Distinct ( Table_3."Customer_ID"))
FROM "Customer" Table_3
WHERE
(Table_3."SubscribeForEmail" = 'Y')
GROUP BY 1
ORDER BY 1
Here, the issue is WHERE clause is applied on BOTH columns whereas I want to apply it on one only.
Regards,
Hasan Arif Khan.