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add indexes so counting topics and posts is faster

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Sam 2013-03-19 18:30:02 -07:00
parent fcbc77d0cd
commit 204759a3ea
1 changed files with 14 additions and 0 deletions
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db/migrate/20130320012100_add_user_indexes_to_posts_and_topics.rb Normal file
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class AddUserIndexesToPostsAndTopics < ActiveRecord::Migration
def up
execute "CREATE INDEX idx_posts_user_id_deleted_at
ON posts(user_id) WHERE deleted_at IS NULL"
execute "CREATE INDEX idx_topics_user_id_deleted_at
ON topics(user_id) WHERE deleted_at IS NULL"
end
def down
execute "DROP INDEX idx_posts_user_id_deleted_at"
execute "DROP INDEX idx_topics_user_id_deleted_at"
end
end