SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of SELECT list is not in GROUP

SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'week2.article.id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by (SQL: select `article`.*, count(article_id) as count from `article` left join `zan` on `article`.`id` = `zan`.`article_id` group by `zan`.`article_id`)

    $data = DB::table('article')
                  ->select('article.*',DB::raw("count(article_id) as count"))
                 ->leftJoin('zan','article.id','=','zan.article_id')
                 ->groupBy('zan.article_id')
                  ->get()->toArray();

 上面的查询语句在查询数据和点赞数量的时候会报错

查询mysql 1055错误码发现问题为在mysql的配置中如果设置了sql_mode包含ONLY_FULL_GROUP_BY值得话，在进行查询时需要将select的字段都包含在group by 中。
即 select x,y from xxx group by x,y
否则就会报错

但是查看自己的配置my.cnf发现在sql_mode中并没有ONLY_FULL_GROUP_BY这个值

然后去查看Laravel的配置文件，config/database.php，查找mysql的配置，

   

'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' => env('DB_PREFIX',''),
            'strict' => true,
            'engine' => null,
        ],

发现有个strict项，默认为true，上网也没有查找到相关解释，根据字面意思猜测可能为是否开启严格模式，将其修改为false，再次测试发现问题解决，可以输出正确结果
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原文链接：https://blog.csdn.net/qq_36663951/article/details/77127267