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16 lines
360 B
Ruby
16 lines
360 B
Ruby
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# frozen_string_literal: true
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class AddIndexToNotifications < ActiveRecord::Migration[6.0]
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disable_ddl_transaction!
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def up
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if !index_exists?(:notifications, [:topic_id, :post_number])
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add_index :notifications, [:topic_id, :post_number], algorithm: :concurrently
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end
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end
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def down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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