问题根源 MySql支持的utf8编码最大字符长度为3字节,如果遇到4字节的宽字符就会出现插入异常.三个字节UTF-8最大能编码的Unicode字符是0xffff,即Unicode中的基本多文种平面(BMP).因而包括Emoji表情(Emoji是一种特殊的Unicode编码)在内的非基本多文种平面的Unicode字符都无法使用MySql的utf8字符集存储. 这也应该就是Laravel 5.4改用4字节长度的utf8mb4字符编码的原因之一.不过要注意的是,只有MySql 5.5.3版本以后才开…
今天在学习laravel的路由模型绑定时,在按照文档执行php artisan migrate时报错. In Connection.php line 664: SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: alter table `users` add unique `users_email_unique`(…
Laravel 5.5 环境,php artisan migrate 之后,出现错误如题. 检查了一下,代码是这样的: $table->increments('id'); $table->string('username')->uniq(); $table->string('email')->nullable()->uniq(); $table->text('avatar_url')->nullable(); $table->string('phone…
  [Illuminate\Database\QueryException]   SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes (S   QL: alter table `users` add unique `users_email_unique`(`email`))   [PDOException]   SQLSTA…
执行nova-manage db sync时出错: 2012-03-24 14:07:01 CRITICAL nova [-] (OperationalError) (1071, ‘Specified key was too long; max key length is 1000 bytes’) ‘\nCREATE TABLE user_project_association (\n\tcreated_at DATETIME, \n\tupdated_at DATETIME, \n\tdele…
laravel 执行 php artisan migrate 安装数据库报 1071 Specified key was too long; max key length is 1000 bytes 数据库不支持长字节 需要在 \app\Providers\AppServiceProvider.php文件里面添加状态码191 具体代码如下  1.DB engine 是MyIsAm改为InnoDB2.字符集是 utf8 ,1个utf8=3bytes3.最后就是 (100+255)*3>1000 所…
在进行Hive集成Mysql作为元数据过程中.做全然部安装配置工作后.进入到hive模式,运行show databases.运行正常,接着运行show tables:时却报错. 关键错误信息例如以下: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes) 详细操作信息例如以下: hive> show databases;…
折腾了两天的错误,BError: (pymysql.err.InternalError) (1071, u‘Specified key was too long; max key length is 767 bytes‘) [SQL: u‘\nCREATE TABLE migrate_ver 2018-01-02 10:32:40.924 76081 ERROR oslo_db.sqlalchemy.exc_filters [-] DBAPIError exception wrapped fro…
今天在练习hive的操作时,在创建数据表时,遇到了异常 FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:javax.jdo.JDODataStoreException: An exception was thrown while adding/validating class(es) : Specified key was too l…
Laravel 默认使用utf8mb4字符编码,而不是的utf8编码.因此运行php artisan migrate会出现如下错误: [Illuminate\Database\QueryException] SQLSTATE[]: Syntax error or access violation: Specified key was too long; max key length is bytes (SQL: alter table users add unique users_email_u…