demarches-normaliennes/db/migrate/20230216041517_remove_champs_external_id_index.rb

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class RemoveChampsExternalIdIndex < ActiveRecord::Migration[6.1]
include Database::MigrationHelpers
disable_ddl_transaction!
def up
remove_index :champs, column: :external_id
end
def down
add_concurrent_index :champs, :external_id
end
end