Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_general_ci - 代码天地

Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_general_ci

其他 2021-12-14 17:37:56 阅读次数: 0

在进行表关联查询，特别是跨库时，特别容易报这个错，原因是关联的两张表对应的排序规则不一致。
在navicate中右键表，查看对象信息

在这里插入图片描述
在join时，添加COLLATE属性，比如a表关联b表，a表的排序规则为utf8mb4_unicode_ci，b表排序规则为utf8mb4_general_ci，直接使用a.xxx_id = b.xxx_id就会报类似这种错误，我们将两张表的排序规则进行统一。

a.xxx_id = b.xxx_id COLLATE utf8mb4_unicode_ci

或者

 a.xxx_id COLLATE utf8mb4_general_ci = b.xxx_id

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转载自blog.csdn.net/qq_41885819/article/details/121543239

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