I am making a custom page where I need to display posts from authors and terms (categories). I tried with the built in WP_query arguments but I am not getting the result I want.
So I want to know how I can get all posts from X authors AND Y Categories (terms) using SQL directives and WP_Query.
I already read the codex http://codex.wordpress.org/Displaying_Posts_Using_a_Custom_Select_Query but I still dont quite get how SQL works. I know the basics but I dont know how to link terms and categories, etc...
Thanks in advance.