16 lines
381 B
Ruby
16 lines
381 B
Ruby
class AddUniqueIndexToListsLabelId < ActiveRecord::Migration
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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_concurrent_index :lists, [:board_id, :label_id], unique: true
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end
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def down
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remove_index :lists, column: [:board_id, :label_id] if index_exists?(:lists, [:board_id, :label_id], unique: true)
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end
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end
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