How to get association between site and project on PWA_Content DB

Hello everybody.

I'm trying to get data from lists of all project sites on Project Server.

I'm using this query to get it: 

select c.ntext2,b.MasterUrl, c.tp_Modified
 from PWA_Content.dbo.Lists a left join PWA_Content.dbo.Webs b on b.Id=a.tp_WebId 
 left join PWA_Content.dbo.UserDataVersioned c on a.tp_ID=c.tp_ListId 
 where a.tp_Title like '%Postagens%' order by b.masterurl,c.tp_Modified

But this query shows posts of lists Postagens of all project sites. I need to filter it by ProjectName to show only posts of one project on each search. 

I looked for a match between projectname or projectid and something on PWA_Content.dbo.Webs or PWA_Content.dbo.Sites views. I tried to Split MasterUrl field to match project name but some projects have different site names and project names.

Can somebody help?

Thanks.

Gabriel.