Hi 咨询一下，PolarDB-x 单表不支持添加二级索引吗？uncategorized SQLE

Hi 咨询一下，PolarDB-x 单表不支持添加二级索引吗？uncategorized SQLException for SQL [CREATE TABLE IF NOT EXISTS snow_namespace.snow_product_test(ID int NOT NULL AUTO_INCREMENT,PRODUCT_NAME varchar(255) DEFAULT NULL,ADDRESS varchar(255) DEFAULT NULL,CITY text DEFAULT NULL,CREATE_TIME datetime(6) DEFAULT NULL,PRIMARY KEY (ID),INDEX IDX_1_PRODUCT_NAME (PRODUCT_NAME))]; SQL state [HY000]; error code [5302]; [15287e34b9401000][11.197.5.95:3075][snow_data_dev]ERR-CODE: [TDDL-5302][ERR_GLOBAL_SECONDARY_INDEX_UNSUPPORTED] Adding global index on other schema is forbidden, so please login with corresponding schema. ; nested exception is java.sql.SQLException: [15287e34b9401000][11.197.5.95:3075][snow_data_dev]ERR-CODE: [TDDL-5302][ERR_GLOBAL_SECONDARY_INDEX_UNSUPPORTED] Adding global index on other schema is forbidden, so please login with corresponding schema.