31 lines
890 B
Ruby
31 lines
890 B
Ruby
class RemoveUnusedIndexes < ActiveRecord::Migration[6.0]
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disable_ddl_transaction!
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def up
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if index_exists?(:page_views, :domain)
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remove_index :page_views, column: :domain, algorithm: :concurrently
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end
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if index_exists?(:notifications, :notifiable_id)
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remove_index :notifications, column: :notifiable_id, algorithm: :concurrently
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end
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if index_exists?(:users, :old_username)
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remove_index :users, column: :old_username, algorithm: :concurrently
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end
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end
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def down
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if !index_exists?(:page_views, :domain)
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add_index :page_views, :domain, algorithm: :concurrently
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end
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if !index_exists?(:notifications, :notifiable_id)
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add_index :notifications, :notifiable_id, algorithm: :concurrently
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end
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if !index_exists?(:users, :old_username)
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add_index :users, :old_username, algorithm: :concurrently
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end
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end
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end
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