mysqldump: Couldn’t execute ‘show fields from `test_index`’: Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation ‘=’ (1267)
mysqldump: Couldn't execute 'show fields from test_index
': Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation '=' (1267)
两个字段排序方式不同,不能比较