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# frozen_string_literal: true
class CleanupEmptySnippetUserMentions < ActiveRecord::Migration[5.2]
DOWNTIME = false
BATCH_SIZE = 10_000
class SnippetUserMention < ActiveRecord::Base
include EachBatch
self.table_name = 'snippet_user_mentions'
end
def up
# cleanup snippet user mentions with no actual mentions,
# re https://gitlab.com/gitlab-org/gitlab/-/merge_requests/24586#note_285982468
SnippetUserMention
.where(mentioned_users_ids: nil)
.where(mentioned_groups_ids: nil)
.where(mentioned_projects_ids: nil)
.each_batch(of: BATCH_SIZE) do |batch|
batch.delete_all
end
end
def down
# no-op
end
end
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