Fix slow query

lib/search.rb

 def search_threads(q, username, from_date, to_date, sort, offset, exact_match)
   sort = Sequel.desc(sort == 'post' ? :last_post_created_at : :created_at)
   query = VLV::Thread
-    .select(Sequel.lit('threads.*, count(*) OVER() AS full_count'))
+    .select(Sequel.lit('threads.*'))
     .where(Sequel.lit("(LOWER(threads.creator) = LOWER(?) OR ? = '')", username, username))
     .where(Sequel.lit("created_at >= ? OR ? IS NULL", from_date, from_date))
     .where(Sequel.lit("created_at >= ? OR ? IS NULL", to_date, to_date))
 
 def search_posts(q, username, from_date, to_date, offset, exact_match)
   query = VLV::Post
-    .select(Sequel.lit('posts.*, threads.title as thread_title, threads.remote_id as remote_thread_id, count(*) OVER() AS full_count'))
+    .select(Sequel.lit('posts.*, threads.title as thread_title, threads.remote_id as remote_thread_id'))
     .join(Sequel.lit('threads on posts.thread_id = threads.id'))
     .where(Sequel.lit("(LOWER(posts.creator) = LOWER(?) OR (? = ''))", username, username))
     .where(Sequel.lit("posts.created_at >= ? OR ? IS NULL", from_date, from_date))

web/server.rb

       erb :results, { locals: {errors: results[:errors]}, layout: :layout }
     else
       params[:current_count] = results[:results].to_a.size
-      params[:full_count] = results[:results].empty? ? 0 : results[:results].first[:full_count]
       previous_url, next_url = build_urls(params)
 
       locals =