mysql 报错:Error Code: 1175. You are using safe update mode and you tried to update a table without a

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#事故现场

mysql执行update操作报错:

  • sql如下:
update psmp.Users set name='Jack' where name='Lily';
  • 报错如下:

Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column. To disable safe mode, toggle the option in Preferences

  • 分析

这是因为MySql运行在safe-updates模式下,该模式会导致非主键条件下无法执行update或者delete命令。
可以通过以下SQL进行状态查询:

show variables like 'SQL_SAFE_UPDATES';

技术图片

#解决方法

  • 执行下面的sql,关闭safe-updates模式:
SET SQL_SAFE_UPDATES = 0;

SET SQL_SAFE_UPDATES = false;
  • 执行下面的sql,打开safe-updates模式:
SET SQL_SAFE_UPDATES = 1;

SET SQL_SAFE_UPDATES = true;

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