addSql('ALTER TABLE reception ADD identification_number VARCHAR(20) DEFAULT NULL'); $this->addSql("UPDATE reception SET identification_number = 'N-BR-' || LPAD(id::text, 4, '0') WHERE identification_number IS NULL"); $this->addSql('CREATE UNIQUE INDEX UNIQ_reception_identification_number ON reception (identification_number)'); } public function down(Schema $schema): void { $this->addSql('DROP INDEX UNIQ_reception_identification_number'); $this->addSql('ALTER TABLE reception DROP identification_number'); } }