mysql> select * from setenum where settype=b'10011'; Empty set mysql> select * from setenum where enumtype=b'100'; Empty set 1. 2. 3. 4. 5. 6. 7. 8. SELECT * FROM setenum WHERE settype LIKE '%赵%'; 1. –与FIND_IN_SET函数同 SELECT * FROM setenum WHERE FIND_IN_SET('...
mysql> create table test (name varchar(40), sex enum('male', concat('fem', 'ale') ); ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'concat('fem', 'ale') )' at line 1...
An ENUM is a string object with a value chosen from a list of permitted values that are enumerated explicitly in the column specification at table creation time. See Section 11.3.1, “String Data Type Syntax” for ENUM type syntax and length limits. ...
Specifies MySQL specific data type of a field, property, for use in aMySqlParameter. Namespace:MySql.Data.MySqlClient Assembly: MySql.Data.dll Version: 9.3.0 Syntax publicenumMySqlDbType Fields NameDescription Binary Fixed length binary string. ...
1 row in set (0.00 sec) 测试第二个枚举类型字段Work_City是否允许存储NULL值: root@localhost : test 11:22:53> INSERT INTO mysqlops_enum(ID,Job_type,Work_City) VALUES(3,‘Other’,NULL); ERROR 1048 (23000): Column ‘Work_City’ cannot be null ...
1 row in set (5.11 sec) root@localhost : mysqlops 02:45:40> ALTER TABLE mysqlops_set_enum MODIFY Work_Option enum(‘JavaScript’,‘DBA’,‘SA’,‘C++’,‘NA’,‘QA’,‘Java’,‘other’,’’,‘Python’) NOT NULL DEFAULT ‘DBA’; ...
1 row in set (0.00 sec) mysql> update userinfo set type=30; Query OK, 115598 rows affected (2.70 sec) Rows matched: 115598 Changed: 115598 Warnings: 0 mysql> select concat(round(sum(data_length/1024/1024),3),'MB') as data_size, ...
MySQL数据库:5.5.15-log InnoDB存储引擎:plugin-InnoDB 1.1.8 (二) 测试数据准备 鉴于篇幅的缘由,单独作为一篇文章分享在www.mysqlops.com网站上,请点击MySQL数据库之数据类型集合类型和枚举类型测试环境 (三) 枚举类型ENUM字段DDL操作 a. 增加枚举类型字段定义的默认值属性 ...
In [8]: u0.status='X' In [9]: u0.save() 将会引发MySQL的数据错误 DataError: (1265, "Data truncated for column 'status' at row 1") 注意事项 在官方的文档中有警告 可以在迁移中将新值附加到choices中,也可以编辑现有选项的可读名称。
mysql> show create table test_tab; +--+--+ | Table | Create Table | +--+--+ | test_tab | CREATE TABLE `test_tab` ( `enum_txt` enum('Text-1','Text-2','日本語') character set ujis default NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8 | +--+--+ 1 row in set Thanks a ...