SQLSTATE [42000]：语法错误或访问冲突：1055 Laravel 5.8 MySQL

Question

我有 MySQL 查询（这是工作），例如：

SELECT 
    project_bills.*, 
    project_deliveryorder.totalcost,
    project_deliveryorder.deliveryorder_number,
    project_deliveryorder.deliveryorder_subject,
    SUM(project_bills_payment.payment_amount) AS TOTAL
FROM 
    project_bills 
JOIN
    project_deliveryorder ON project_bills.id_deliveryorder = project_deliveryorder.id
JOIN
    project_bills_payment ON project_bills.id = project_bills_payment.id_bill
GROUP BY
    project_bills.id
ORDER BY
    project_bills.bill_date, project_bills.id DESC;

我尝试翻译成 Laravel 格式，例如：

DB::table('project_bills')
    ->join('project_deliveryorder', 'project_bills.id_deliveryorder', '=', 'project_deliveryorder.id')
    ->join('project_bills_payment', 'project_bills.id', '=', 'project_bills_payment.id_bill')
    ->select('project_bills.*', 'project_deliveryorder.totalcost', 'project_deliveryorder.deliveryorder_number', 'project_deliveryorder.deliveryorder_subject', DB::raw('SUM(project_bills_payment.payment_amount) AS TOTAL'))
    ->groupBy('project_bills.id')
    ->orderBy('project_bills.bill_date', 'DESC')
    ->orderBy('project_bills.id', 'DESC')
    ->get();

然后我收到一些错误，例如：

SQLSTATE[42000]：语法错误或访问冲突：1055 'db_tcm.project_bills.id_deliveryorder' 不在 GROUP BY 中

我也读过 Stack Overflow 中的Group by not working - Laravel，那么解决这个问题的最佳方法是什么？

• 更改数据库配置 ('strict' => true)？
• 在 MySQL 上禁用“ONLY_FULL_GROUP_BY”？
• 还是重新构建 Laravel 查询构建器？

Answer 1

当您的查询中有GROUP BY 时，您只能选择GROUP BY 中的列，或者是SUM()、MIN()、MAX() 等聚合函数。

如果我正确理解您的数据，您可以在单独的查询中提取 SUM()，然后将 JOIN 提取到主查询中。

DB::table('project_bills as pb')
    ->join('project_deliveryorder as pdo', 'pb.id_deliveryorder', '=', 'pdo.id')
    ->join(DB::raw('(SELECT id_bill, SUM(payment_amount) AS TOTAL
                      FROM project_bills_payment
                      GROUP BY id_bill) AS pbp'), 'pb.id', '=', 'pbp.id_bill')
    ->select('pb.*', 
             'pdo.totalcost', 
             'pdo.deliveryorder_number', 
             'pdo.deliveryorder_subject', 
             'pbp.TOTAL')
    ->orderBy('pb.bill_date', 'DESC')
    ->orderBy('pb.id', 'DESC')
    ->get();

禁用严格模式或禁用ONLY_FULL_GROUP_BY 在我看来不是一个好主意，如果您可以通过重新处理查询来避免它，那通常会好得多。