demarches-normaliennes/db/migrate/20230928083809_remove_exports_unicity_constraint.rb

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class RemoveExportsUnicityConstraint < ActiveRecord::Migration[7.0]
disable_ddl_transaction!
def change
remove_index :exports, ["format", "time_span_type", "statut", "key"], unique: true
add_index :exports, "key", unique: false, algorithm: :concurrently
end
end