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#lock_nested_set very slow on mysql with thousands of subtasks (#23318).

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Patch by Stephane Evr.

git-svn-id: http://svn.redmine.org/redmine/trunk@15891 e93f8b46-1217-0410-a6f0-8f06a7374b81
This commit is contained in:
Jean-Philippe Lang
2016-10-08 09:15:55 +00:00
parent 960b322388
commit e7f1780d7d
1 changed files with 4 additions and 1 deletions
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5
lib/redmine/nested_set/issue_nested_set.rb
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@@ -158,7 +158,10 @@ module Redmine
self.class.reorder(:id).where(:root_id => sets_to_lock).lock(lock).ids
else
sets_to_lock = [id, parent_id].compact
self.class.reorder(:id).where("root_id IN (SELECT root_id FROM #{self.class.table_name} WHERE id IN (?))", sets_to_lock).lock.ids
self.class.reorder(:id).
joins("INNER JOIN #{self.class.table_name} t2 ON #{self.class.table_name}.root_id = t2.root_id").
where("t2.id IN (?)", sets_to_lock).
lock.ids
end
end