feature #4: create function for article

implement generate_version_number()

resources/functions/citizen/find_citizen_by_id.sql

@@ -7,7 +7,7 @@ begin
     from (
          select 
             z.*, 
-            find_user_by_id(z.user_id)
+            find_user_by_id(z.user_id) as "user"
          from citizen as z
          where z.id = _id
      ) as t;

resources/functions/citizen/find_citizen_by_user_id.sql

@@ -7,7 +7,7 @@ begin
     from (
         select
             z.*,
-            find_user_by_id(z.user_id)
+            find_user_by_id(z.user_id) as "user"
         from citizen as z
         where z.user_id = _user_id
     ) as t;

resources/functions/citizen/upsert_citizen.sql

@@ -21,10 +21,7 @@ begin
         follow_annonymous = excluded.follow_annonymous
     returning id into new_id;
 
-    select to_json(z)
-    into resource
-    from citizen as z
-    where z.id = new_id;
+    select find_citizen_by_id(new_id) into resource;
 end;
 $$;