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# frozen_string_literal: true
class ChangeIndexMrMetricsTargetProjectId < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
disable_ddl_transaction!
DOWNTIME = false
INDEX_NAME = 'index_merge_request_metrics_on_target_project_id_merged_at'
NULLS_LAST_INDEX_NAME = 'index_mr_metrics_on_target_project_id_merged_at_nulls_last'
def up
add_concurrent_index :merge_request_metrics, [:target_project_id, :merged_at, :id], order: { merged_at: 'DESC NULLS LAST', id: 'DESC' }, name: NULLS_LAST_INDEX_NAME
remove_concurrent_index_by_name(:merge_request_metrics, INDEX_NAME)
end
def down
add_concurrent_index :merge_request_metrics, [:target_project_id, :merged_at], name: INDEX_NAME
remove_concurrent_index_by_name(:merge_request_metrics, NULLS_LAST_INDEX_NAME)
end
end
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