27 lines
846 B
Ruby
27 lines
846 B
Ruby
class AddLatestMergeRequestDiffIdToMergeRequests < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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def up
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add_column :merge_requests, :latest_merge_request_diff_id, :integer
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add_concurrent_index :merge_requests, :latest_merge_request_diff_id
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add_concurrent_foreign_key :merge_requests, :merge_request_diffs,
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column: :latest_merge_request_diff_id,
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on_delete: :nullify
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end
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def down
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remove_foreign_key :merge_requests, column: :latest_merge_request_diff_id
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if index_exists?(:merge_requests, :latest_merge_request_diff_id)
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remove_concurrent_index :merge_requests, :latest_merge_request_diff_id
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end
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remove_column :merge_requests, :latest_merge_request_diff_id
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end
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end
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