Requester name, mail, login in category report for last 6 months

Requester name, mail, login in category report for last 6 months

Hi, I'm trying to create a report that queries the following items:

(We're on 9.3 build 9335, MSSQL Server 2008)

Requester first name
Requester login name
Requester email address
Category is: 'BS&CP - Development & Database' or 'BS&CP / SAP'
Request status is closed
Request created within last 6 months

Column that shows the number of requests grouped by requester (optional)

I'm not very firm with SQL so any assistance will be greatly appreciated!

Best regards