Advantages of ENUM in MySQL The Enum values are iterable. It stores the values in a group. It reduces errors that are caused by mistyping the numbers. Disadvantages of ENUM in MySQL If we want to change the enumeration of the list, then we have to recreate the whole table which proves t...
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...
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 '(255) NULL, account_type' enum('1','2','3') NOT NULL default '1', email_acti' at line 17 ...
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 '1),enumc enum(5))' at line 1 root@localhost: 00:31 [7308][db_hlf]>create table tbl_setenum(id int(11) not null primary k...
SeeSection 13.3.1, “String Data Type Syntax”forENUMtype syntax and length limits. TheENUMtype has these advantages: Compact data storage in situations where a column has a limited set of possible values. The strings you specify as input values are automatically encoded as numbers. SeeSection ...
MySQL的常用数据类型包括:Number/Date/String,而String类型中又包含了Char/Varchar/Binary/blob/text等长度不同的简单数据类型,有时我们需要对数据做更细...
SELECT FIND_IN_SET('111','222,333,444'); #查询结果:0 ## 加法 SELECT 1|4|16|2 /** ENUM和SET ENUM只取单值,但要注意,他的索引是从1开始,加了引号就是值,不加就是索引。 设定enum的格式: enum("选项1","选项2","选项3",...); ...
Provides a reference to error codes returned by MySQL.Namespace: MySql.Data.MySqlClientAssembly: MySql.Data.dllVersion: 9.3.0Syntaxpublic enum MySqlErrorCode Fields NameDescription AbortingConnection AccessDenied Normally returned when an incorrect password is given AddPartitionNoNewPartition Add...
问具有数据值tinytext、longtext和enum的CREATE TABLE上的MySQL令人讨厌的语法错误EN一、字符串类型 类型...
Date: June 01, 2012 06:35PM I'm getting this error when executing the create table statement shown below. 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 'group ENUM('supervisor'...