Make sure comments are sorted by hot_rank, then score. (#3667)

crates/db_views/src/comment_view.rs

@@ -362,12 +362,10 @@ impl<'a> CommentQuery<'a> {
     query = match self.sort.unwrap_or(CommentSortType::Hot) {
       CommentSortType::Hot => query
         .then_order_by(comment_aggregates::hot_rank.desc())
-        .then_order_by(comment_aggregates::published.desc()),
+        .then_order_by(comment_aggregates::score.desc()),
-      CommentSortType::Top => query
-        .order_by(comment_aggregates::score.desc())
-        .then_order_by(comment_aggregates::published.desc()),
       CommentSortType::New => query.then_order_by(comment::published.desc()),
       CommentSortType::Old => query.then_order_by(comment::published.asc()),
+      CommentSortType::Top => query.order_by(comment_aggregates::score.desc()),
     };
 
     // Note: deleted and removed comments are done on the front side

migrations/2023-07-19-163511_comment_sort_hot_rank_then_score/down.sql

@@ -0,0 +1,4 @@
+drop index idx_comment_aggregates_hot, idx_comment_aggregates_score;
+
+create index idx_comment_aggregates_hot on comment_aggregates (hot_rank desc, published desc);
+create index idx_comment_aggregates_score on comment_aggregates (score desc, published desc);

migrations/2023-07-19-163511_comment_sort_hot_rank_then_score/up.sql

@@ -0,0 +1,10 @@
+-- Alter the comment_aggregates hot sort to sort by score after hot_rank.
+-- Reason being, is that hot_ranks go to zero after a few days, 
+-- and then comments should be sorted by score, not published.
+
+drop index idx_comment_aggregates_hot, idx_comment_aggregates_score;
+
+create index idx_comment_aggregates_hot on comment_aggregates (hot_rank desc, score desc);
+
+-- Remove published from this sort, its pointless
+create index idx_comment_aggregates_score on comment_aggregates (score desc);