JQL query (All issues from 1 project and certain issues from a 2nd project)

[Brian]

Is it possible to write a JQL query that shows all issues from Project A and only certain issues from project B?  Something like show me everything in Project A and only issues assigned to Mary in Project B.

[Nic Brough -Adaptavist-]

Try the "advanced search", specifically in this case:

Project = A or (project = B and assignee = Mary)

[Brian]

Thanks Nic.  I didn't understand the use of OR, I thought that it meant either Project A issues or Project B issues but don't show both.

I ended up with this query.

project in ProjectA OR (project = ProjectC AND assignee = ru89980) ORDER BY key DESC"