playlist: move my_follows to cte

Author: stereosteve

api/dbv1/get_playlists.sql.go

@@ -1,4 +1,16 @@
 -- name: GetPlaylists :many
+WITH my_follows AS (
+  SELECT
+    followee_user_id as user_id,
+    follower_count
+  FROM follows
+  JOIN aggregate_user ON followee_user_id = user_id
+  WHERE @my_id > 0
+    AND follower_user_id = @my_id
+    AND follows.is_delete = false
+  ORDER BY follower_count DESC
+  LIMIT 5000
+)
 SELECT
   -- artwork
   p.description,
@@ -64,8 +76,7 @@ SELECT
     FROM (
       SELECT user_id, repost_item_id, reposts.created_at
       FROM reposts
-      JOIN follows ON followee_user_id = reposts.user_id AND follower_user_id = @my_id
-      JOIN aggregate_user USING (user_id)
+      JOIN my_follows USING (user_id)
       WHERE repost_item_id = p.playlist_id
         AND repost_type != 'track'
         AND reposts.is_delete = false
@@ -86,8 +97,7 @@ SELECT
     FROM (
       SELECT user_id, save_item_id, saves.created_at
       FROM saves
-      JOIN follows ON followee_user_id = saves.user_id AND follower_user_id = @my_id
-      JOIN aggregate_user USING (user_id)
+      JOIN my_follows USING (user_id)
       WHERE save_item_id = p.playlist_id
         AND save_type != 'track'
         AND saves.is_delete = false