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13 lines
588 B
13 lines
588 B
class AddStatusesIndexOnAccountIdId < ActiveRecord::Migration[5.1]
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disable_ddl_transaction!
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def change
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# Statuses queried by account_id are often sorted by id. Querying statuses
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# of an account to show them in his status page is one of the most
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# significant examples.
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# Add this index to improve the performance in such cases.
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add_index 'statuses', ['account_id', 'id'], algorithm: :concurrently, name: 'index_statuses_on_account_id_id'
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remove_index 'statuses', algorithm: :concurrently, column: 'account_id', name: 'index_statuses_on_account_id'
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end
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end
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