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# frozen_string_literal: true
class AddTemporaryMergeRequestWithMentionsIndex < ActiveRecord::Migration[5.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
INDEX_CONDITION = "description like '%@%' OR title like '%@%'"
INDEX_NAME = 'merge_request_mentions_temp_index'
disable_ddl_transaction!
def up
# create temporary index for notes with mentions, may take well over 1h
add_concurrent_index(:merge_requests, :id, where: INDEX_CONDITION, name: INDEX_NAME)
end
def down
remove_concurrent_index(:merge_requests, :id, where: INDEX_CONDITION, name: INDEX_NAME)
end
end
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