Laravel Eloquent 查询生成器中的奇怪错误

Question

我知道这是一个已知问题，SO 上还有其他关于此问题的问题，但其中 none 个问题很有用。如果我在运行抛出 Laravel 时直接对数据库运行给出错误，则原始查询工作正常。这到底是怎么回事？

查询：

Order::selectRaw("COUNT(id) AS `data`, DATE_FORMAT(created_at, '%m-%Y') AS new_date, YEAR(created_at) AS `year`, MONTH(created_at) AS `month`")
        ->groupBy('year')->get();

错误：

SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'orders.created_at' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by (SQL: select COUNT(id) AS `data`, DATE_FORMAT(created_at, '%m-%Y') AS new_date, YEAR(created_at) AS `year`, MONTH(created_at) AS `month` from `orders` group by `year`)

Answer 1

这是数据库错误，与 Laravel 无关。运行数据库中完全相同的查询也应该失败，如果没有失败，那么它应该:)。

您还需要按查询中的其他字段进行分组，"new_date"、"month" 和 "year"。尝试这样的事情：

Order::selectRaw("COUNT(id) AS `data`, DATE_FORMAT(created_at, '%m-%Y') AS new_date, YEAR(created_at) AS `year`, MONTH(created_at) AS `month`")
    ->groupBy('year', 'month', 'new_date')->get();

Answer 2

如果您在数据库中运行没有任何问题，那么它是您文件 config->database.php[= 中的 laravel 设置16=], 只需将 'strict' 设置为 'false'.

'mysql' => [ 'driver' => 'mysql', 'host' => env('DB_HOST', '127.0.0.1'), 'port' => env('DB_PORT', '3306'), 'database' => env('DB_DATABASE', 'forge'), 'username' => env('DB_USERNAME', 'forge'), 'password' => env('DB_PASSWORD', ''), 'unix_socket' => env('DB_SOCKET', ''), 'charset' => 'utf8', 'collation' => 'utf8_general_ci', 'prefix' => '', 'strict' => false, 'engine' => null, ],

Laravel Eloquent 查询生成器中的奇怪错误

Strange error in Laravel Eloquent query builder

laravel

eloquent

laravel-query-builder