FIX: cap posts_read_count in user_stats to 50 posts per topic_entered

app/jobs/onceoff/fix_posts_read.rb

@@ -0,0 +1,21 @@
+module Jobs
+  class FixPostsRead < Jobs::Onceoff
+    def execute_onceoff(args)
+      # Skipping to the last post in a topic used to count all posts in the topic
+      # as read in user stats. Cap the posts read count to 50 * topics_entered.
+
+      sql = <<~SQL
+UPDATE user_stats
+   SET posts_read_count = topics_entered * 50
+ WHERE user_id IN (
+   SELECT us2.user_id
+     FROM user_stats us2
+    WHERE us2.topics_entered > 0
+      AND us2.posts_read_count / us2.topics_entered > 50
+ )
+      SQL
+
+      UserStat.exec_sql(sql)
+    end
+  end
+end