demarches-normaliennes/db/migrate/20230110181426_add_champs_row_id_index.rb

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class AddChampsRowIdIndex < ActiveRecord::Migration[6.1]
disable_ddl_transaction!
def change
add_index :champs, [:type_de_champ_id, :dossier_id, :row_id], unique: true, algorithm: :concurrently
end
end