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# frozen_string_literal: true
class RemoveDuplicateProjectTagReleases < Gitlab::Database::Migration[1.0]
disable_ddl_transaction!
class Release < ActiveRecord::Base
include EachBatch
self.table_name = 'releases'
end
def up
Release.each_batch(of: 5000) do |relation|
relation
.where('exists (select 1 from releases r2 where r2.project_id = releases.project_id and r2.tag = releases.tag and r2.id > releases.id)')
.delete_all
end
end
def down
# no-op
#
# releases with the same tag within a project have been removed
# and therefore the duplicate release data is no longer available
end
end
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