abortIf($this->connection->getDatabasePlatform()->getName() != 'postgresql', 'Migration can only be executed safely on \'postgresql\'.'); $this->addSql('ALTER TABLE posts.posts ALTER updated_at DROP NOT NULL'); } /** * @param Schema $schema */ public function down(Schema $schema) { // this down() migration is auto-generated, please modify it to your needs $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'postgresql', 'Migration can only be executed safely on \'postgresql\'.'); $this->addSql('ALTER TABLE posts.posts ALTER updated_at SET NOT NULL'); } }