feature #19: improve comment fixtures and add sub comments

resources/sql/fixtures/comment.sql

@@ -7,16 +7,34 @@ begin
     select
         z.id,
         a.id,
-        'content' || row_number() over () * g
-    from (select *, row_number() over () % 995 rn, g from citizen, lateral generate_series(1, 5) g) z
+        'content' || (row_number() over () * g)
+    from (select *, row_number() over () % 995 rn from citizen, lateral generate_series(1, 5) g) z
     join (select *, row_number() over () rn from article) a using (rn);
 
+    insert into comment_on_article (citizen_id, target_id, content, parent_id)
+    select
+        z.id,
+        a.target_id,
+        'content' || row_number() over () * g,
+        a.id
+    from (select *, row_number() over () % 995 rn from citizen, lateral generate_series(1, 5) g) z
+    join (select *, row_number() over () rn from comment_on_article) a using (rn);
+
+    insert into comment_on_article (citizen_id, target_id, content, parent_id)
+    select
+        z.id,
+        a.target_id,
+        'content' || row_number() over () * g,
+        a.id
+    from (select *, row_number() over () % 995 rn from citizen, lateral generate_series(1, 5) g) z
+    join (select *, row_number() over () rn from comment_on_article where parent_id is not null) a using (rn);
+
     insert into comment_on_constitution (citizen_id, target_id, content)
     select
         z.id,
         a.id,
         'content' || row_number() over () * g
-    from (select *, row_number() over () % 995 rn, g from citizen, lateral generate_series(1, 5) g) z
+    from (select *, row_number() over () % 995 rn from citizen, lateral generate_series(1, 5) g) z
     join (select *, row_number() over () rn from constitution) a using (rn);
 
     raise notice 'comment fixtures done';