github-mirror/discourse
2
0
Fork 0
mirror of https://github.com/discourse/discourse.git synced 2024-11-30 12:55:31 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Remove comment that is no longer relevant.

Browse Source
This commit is contained in:
Guo Xiang Tan 2017-09-14 19:57:50 +08:00
parent 4e49b3b140
commit de46d59a94
1 changed files with 0 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/topic_query.rb
View File

@ -285,15 +285,6 @@ class TopicQuery
end
def self.unread_filter(list, user_id, opts)
# PERF note
# We use the function first_unread_topic_for here instead of joining
# the table to assist the PostgreSQL query planner
#
# We want the query planner to have the actual value of the first_unread_topic so
# it can pick an appropriate plan. If it does not have this upfront it will just assume
# that the value will be 1/3 of the way through the topic table which makes it use terrible
# indexes for the plan.
#
col_name = opts[:staff] ? "highest_staff_post_number" : "highest_post_number"
list