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