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# frozen_string_literal: true
class RemoveOldExternalDiffMigrationIndex < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
remove_concurrent_index_by_name(
:merge_request_diffs,
'index_merge_request_diffs_on_merge_request_id_and_id_partial'
)
end
def down
add_concurrent_index(
:merge_request_diffs,
[:merge_request_id, :id],
where: 'NOT stored_externally OR stored_externally IS NULL',
name: 'index_merge_request_diffs_on_merge_request_id_and_id_partial'
)
end
end
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