query: SELECT project_id ,  count(*) FROM Documents GROUP BY project_id
question: Are Showing project ids and the number of documents in each project.
query_toks: SELECT project_id , count ( * ) FROM Documents GROUP BY project_id
query_toks_no_value: select project_id , count ( * ) from documents group by project_id
question_toks: Are Showing project ids and the number of documents in each project.