 Hash Join  (cost=12.93..26.33 rows=130 width=1113)
   Hash Cond: (pg_catalog.concat(blogs.title, ?) = (posts.title)::text)
   ->  Seq Scan on blogs  (cost=0.00..11.40 rows=140 width=540)
   ->  Hash  (cost=11.30..11.30 rows=130 width=573)
         ->  Seq Scan on posts  (cost=0.00..11.30 rows=130 width=573)