COLLATION 'utf8mb4_general_ci' 对 CHARACTER SET 'binary' 无效

Question

我想通过搜索 "Yilmaz"

在我的 Laravel 应用程序中找到名称为 "Yılmaz" 的用户

在 Laravel 中默认（使用 utf8mb4_unicode_ci 作为我连接的排序规则）this

\App\User::whereRaw('name LIKE ?', '%Yilmaz%')->get();

returns 没什么。

正如我在 , it works with collation utf8mb4_general_ci. However, it is not recommended to use utf8mb4_general_ci as default collation because it is not accuratly sorting 中发现的那样。

我的第一次尝试是

\App\User::whereRaw('name LIKE ? collate utf8mb4_general_ci', '%Yilmaz%')->get();

但这会抛出

SQLSTATE[42000]: Syntax error or access violation: 1253 COLLATION 'utf8mb4_general_ci' is not valid for CHARACTER SET 'binary' (SQL: select * from users where name LIKE %Yilmaz% collate utf8mb4_general_ci)

接下来，我尝试了

\App\User::whereRaw('name LIKE convert(? using utf8mb4)', '%Yilmaz%')->get();

但是这个returns

SQLSTATE[HY000]: General error: 1267 Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_general_ci,IMPLICIT) for operation 'like' (SQL: select * from users where name LIKE convert(%Yilmaz% using utf8mb4))

如何仅针对一个查询将 Laravel 中的排序规则更改为 utf8mb4_general_ci？

Answer 1

两者结合对我有用：

\App\User::whereRaw(
    'name LIKE convert(? using utf8mb4) collate utf8mb4_general_ci',
    '%Yilmaz%'
)->get();

但我不确定这是否是最好的方法。

COLLATION 'utf8mb4_general_ci' 对 CHARACTER SET 'binary' 无效

COLLATION 'utf8mb4_general_ci' is not valid for CHARACTER SET 'binary'

mysql

collation

laravel-5