HELP WITH SQL AND REPORT WRITER

Hello guys.

I Have ZERO SQL experience so anyone's help will be greatly appreciated.

I need to add on my reports Region

SELECT DISTINCT

  ahv.Name 'Alert Name'

  ,ahv.RelatedNodeCaption 'Parent Device'

  ,ahv.EntityCaption 'Alert Object'

  ,ISNULL(lastOne.Qty,0) 'Last 1 Day'

  ,ISNULL(lastSeven.Qty,0) 'Last 7 Days'

  ,ISNULL(lastThirty.Qty,0) 'Last 30 Days'

FROM AlertHistoryView ahv

How do I do it PLEASE?

Thanks in advancce to all of you that might help me/ save me