MariaDB [test]> show create table assets ; +--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | assets | CREATE TABLE `assets` ( `item_name` varchar(32) NOT NULL, `dynamic_cols` blob, PRIMARY KEY (`item_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 PAGE_CHECKSUM=1 | +--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec) MariaDB [test]> insert into assets values ('MariaDB T-shirt', COLUMN_CREATE('color', 'blue', 'size', 'XL')); ERROR 1921 (22007): Illegal value used as argument of dynamic column function MariaDB [test]> select version(); +--------------------+ | version() | +--------------------+ | 5.5.31-MariaDB-log | +--------------------+ 1 row in set (0.00 sec) Why? -- 姓名： river/吴炳锡 手机：13501245755 http://www.mysqlsupport.cn 创业公司MySQL 支持，优化，架构设计