如何在Laravel中将sql转换为QueryBuilder

问题描述

$old_records = DB::connection("MysqL_old_s")->table('leads')
        ->select(DB::raw('count(*) as  source_count,source'))
        ->groupBy('source')
        ->get();
dd($old_records); // works right

此查询正常运行。 我想再添加一列，例如 id 或 created_at 以选择

我无法做到以下几点：

$old_records = DB::connection("MysqL_old_s")->table('leads')
        ->select('id',DB::raw('count(*) as source_count,source'))
        ->groupBy('source')
        ->get();
dd($old_records); // it gives an error

它给我一个错误，是：

sqlSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of SELECT list is not in GROUP 
BY clause and contains nonaggregated column 'crmclini_crmv2.leads.id' which is not functionally 
dependent on columns in GROUP BY
clause; this is incompatible with sql_mode=only_full_group_by (sql: select `id`,count(*) as 
source_count,source,id from `leads` group by `source`)

解决方法

您应在group by子句中包括您选择的列，以对其进行分组：

$old_records = DB::connection("mysql_old_s")->table('leads')
        ->select('id',DB::raw('count(*) as source_count,source'))
        ->groupBy(['id','source'])
        ->get();

第二个选项（我不推荐），您可以在config / database.php中禁用only_full_group_by选项：

'connections'=> [ ...

'mysql' => [
...
    'strict' => false,...

],]

除非有特殊情况，否则请按选择的列将查询分组