Question

我当前正在使用Lumen 5.7作为我的后端API。我需要使用左联接从多个表中选择一些字段。我有以下查询（普通mysql查询）

SELECT issue_id,issue_receipt_id, date_format(issue_datetime, '%d-%m-%Y') as issue_datetime,
issue_item,sum(issue_wt) as issue_wt, round(avg(issue_pure),3) as issue_pure,
sum(issue_fine) as issue_fine, sum(issue_cash) as issue_cash,
sum(receipt_wt) as receipt_wt, sum(receipt_fine) as receipt_fine,
pure_name as issue_item_name 
FROM item_issues 
LEFT JOIN receipt_items ON receipt_id = issue_receipt_id 
LEFT JOIN purities ON pure_id = issue_item
group by issue_receipt_id;

我尝试像这样在管腔中

$receipts = DB::table('item_issues')            
            ->leftJoin('receipt_items', 'receipt_items.receipt_id', '=', 'item_issues.issue_receipt_id')
            ->leftJoin('purities', 'purities.pure_id', '=', 'item_issues.issue_item')
            ->select('issue_id', 'issue_receipt_id', DB::raw("date_format(issue_datetime, '%d-%m-%Y') as issue_datetime"), 'issue_item', 'pure_name', DB::raw('sum(issue_wt) as issue_wt'), 
            DB::raw('round(avg(issue_pure),3) as issue_pure'),
            DB::raw('sum(issue_fine) as issue_fine'),
            DB::raw('sum(issue_cash) as issue_cash'),
            DB::raw('sum(receipt_wt) as receipt_wt'),
            DB::raw('sum(receipt_fine) as receipt_fine'))
            ->groupBy('item_issues.issue_receipt_id', 'item_issues.issue_item')->get();

但是它产生诸如语法错误或访问冲突之类的错误：1055 SELECT列表的表达式＃1不在GROUP BY子句中，并且包含未聚合的列'item_issues.issue_id'，该列在功能上不依赖于GROUP BY子句中的列；但是我必须选择以上字段，如何做到这一点而不会出现问题。而且我尝试禁用严格模式，但是无论在.env还是其他文件中，我都不知道在何处禁用此选项。我在流明中找不到database.config。任何人都可以为此提供帮助。

Answer 1

默认情况下，Lumen应用程序中没有任何名为'config/database.php'的文件夹。但可以像在laravel中一样将此配置文件添加到您的管腔应用中。

并将以下代码的和平度粘贴到您的database.php文件中。

return [
    'default' => 'mysql',
    'connections' => [
        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST'),
            'database' => env('DB_DATABASE'),
            'username' => env('DB_USERNAME'),
            'password' => env('DB_PASSWORD'),
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'strict'    => false
        ]
    ]
]

这里重要的是'strict' => false模式。

流明API通过汇总来选择数据

1 个答案: