addSql(<<<'SQL' DROP TABLE IF EXISTS sessions SQL); $this->addSql(<<<'SQL' ALTER TABLE user_preference CHANGE preference_value preference_value VARCHAR(1024) DEFAULT NULL SQL); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql(<<<'SQL' CREATE TABLE sessions (sess_id VARBINARY(128) NOT NULL, sess_data LONGBLOB NOT NULL, sess_lifetime INT UNSIGNED NOT NULL, sess_time INT UNSIGNED NOT NULL, INDEX sess_lifetime_idx (sess_lifetime), PRIMARY KEY(sess_id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_bin` ENGINE = InnoDB COMMENT = '' SQL); $this->addSql(<<<'SQL' ALTER TABLE user_preference CHANGE preference_value preference_value VARCHAR(255) DEFAULT NULL SQL); } }