addSql('create unique index uniq_5bdc8067567988b4440f6072 on chill_main_notification (relatedentityclass, relatedentityid)'); } public function getDescription(): string { return 'remove unique index which prevent to notify twice an entity'; } public function up(Schema $schema): void { $this->addSql('DROP INDEX uniq_5bdc8067567988b4440f6072'); } }