addSql('DELETE FROM app_user WHERE id NOT IN ( SELECT MIN(id) FROM app_user GROUP BY npub );'); // this up() migration is auto-generated, please modify it to your needs $this->addSql('CREATE UNIQUE INDEX UNIQ_88BDF3E95FB8BABB ON app_user (npub)'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('DROP INDEX UNIQ_88BDF3E95FB8BABB'); } }