标签：mysql range
当字段类型为 unsigned 时，使用相关结果为负值时就会报错，报错如下：
BIGINT UNSIGNED value is out of range in ..
解决方法
使用 cast() 修改字段类型为 signed
select cast(quantity as signed) - cast(frozen_quantity as signed) from ...
本文出自 “技术蓝” 博客，请务必保留此出处http://bstdn.blog.51cto.com/8667020/1951064
Mysql Query error: BIGINT UNSIGNED value is out of range in..解决方法
标签：mysql range
原文地址：http://bstdn.blog.51cto.com/8667020/1951064
