about annotations over fk join

cdf_meta_analogous_queries

@@ -0,0 +1,28 @@
+1 model
+Journal
+	refereed
+
+2 model
+Article
+	doctype
+	journal
+
+
+Journal.objects.values('refereed').annotate(co_ref=Count('id', distinct=True), co_doctypes=Count('articles__doctype', distinct=True))
+
+
+Journal.objects.values('articles__doctype', 'refereed').annotate(doc_counts=Count('articles__doctype'))
+
+
+1 model
+File
+	experiment
+
+2 model
+FileAttribute
+	title
+	file
+
+File.objects.values('experiment').annotate(co_exp=Count('id', distinct=True), co_titles=Count('attributes__title', distinct=True))
+
+File.objects.values('attributes__title, 'experiment').annotate(title_counts=Count('attributes__title'))