addSql('CREATE TABLE document_sub_group (document_id INT NOT NULL, sub_group_id INT NOT NULL, INDEX IDX_93BC08DDC33F7837 (document_id), INDEX IDX_93BC08DD44FB371E (sub_group_id), PRIMARY KEY(document_id, sub_group_id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'); $this->addSql('ALTER TABLE document_sub_group ADD CONSTRAINT FK_93BC08DDC33F7837 FOREIGN KEY (document_id) REFERENCES document (id) ON DELETE CASCADE'); $this->addSql('ALTER TABLE document_sub_group ADD CONSTRAINT FK_93BC08DD44FB371E FOREIGN KEY (sub_group_id) REFERENCES sub_group (id) ON DELETE CASCADE'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('DROP TABLE document_sub_group'); } }