addSql('ALTER TABLE coastal_point ADD osm_id VARCHAR(30) DEFAULT NULL'); $this->addSql('CREATE UNIQUE INDEX uniq_coastal_osm_id ON coastal_point (osm_id)'); } public function down(Schema $schema): void { $this->addSql('DROP INDEX uniq_coastal_osm_id'); $this->addSql('ALTER TABLE coastal_point DROP COLUMN osm_id'); } }