Laravel group不工作，版本5.4.24

Question

这是我的查询，适用于所有旧版本。

$data = DB::table('applicant')
            ->groupBy('AppAffID')
            ->get();

我得到的错误是：

SQLSTATE[42000]: Syntax error or access violation: 1055 'comloant_loantreeAPI.applicant.AppID' isn't in GROUP BY (SQL: select * from `applicant` group by `AppAffID`)

我尝试过更改数据库：

我添加了严格的＆＃39; =＆GT; false，到数据库配置。

'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', 'localhost'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => false,
            'engine' => null,
        ],

Answer 1

使用groupBy想要实现的目标是什么？如果您想对AppAffID进行排序，则应使用orderBy，而不是这样：

$data = DB::table('applicant')
        ->orderBy('AppAffID', 'desc') //can also use 'asc' for ascending
        ->get();