Question

我有这个查询

DB::table('pro_orders_has_passengers')
        ->where('title_name','MR.')
        ->update([
            'title_name' => 'mr',
    ]);
    DB::table('pro_orders_has_passengers')
        ->where('title_name','MRS.')
        ->update([
            'title_name' => 'mrs',
    ]);
    DB::table('pro_orders_has_passengers')
        ->where('title_name','Miss')
        ->update([
            'title_name' => 'ms',
    ]);
    DB::table('pro_orders_has_passengers')
        ->where('title_name','Girl')
        ->update([
            'title_name' => 'girl',
    ]);
    DB::table('pro_orders_has_passengers')
        ->where('title_name','Boy')
        ->update([
            'title_name' => 'boy',
    ]);

我得到正确的结果。但是我希望在一个查询中得到这个结果。像这样

 $titlename = ['MR.','MRS.','Miss','Girl','Boy'];

    DB::table('pro_orders_has_passengers')
        ->where('title_name',$titlename)
        ->update([
            ........
    ]);

我该怎么做？谢谢您的回复。

Answer 1

我认为您可以通过这种方式实现您想要的

$titlename = ['MR.','MRS.','Miss','Girl','Boy'];
for($i=0; $i < count($titlename);$i++) {
DB::table('pro_orders_has_passengers')
            ->where('title_name',$titlename[$i])
            ->update(['title_name' => strtolower(str_replace('.', '' , $titlename[$i]))]);
}

或使用foreach循环，以提高代码的可读性：

$titlenames = ['MR.','MRS.','Miss','Girl','Boy'];
foreach($titlenames as $titlename) {
DB::table('pro_orders_has_passengers')
            ->where('title_name',$titlename)
            ->update(['title_name' => strtolower(str_replace('.', '' , $titlename))]);
}

Answer 2

    $titlename = ['mr' => 'MR.','mrs' => 'MRS.','ms' => 'Miss','girl' => 'Girl', 'boy' => 'Boy'];

    $update_query = "UPDATE pro_orders_has_passengers SET title_name = CASE";
    foreach ($titlename  as $new_title => $title) {
       $update_query = $update_query . " WHEN title_name = '$title'  THEN  '$new_title'";
    }
    $update_query = $update_query . " END WHERE title_name IN ('".implode(array_values($titlename), '\',\'')."')";
    \DB::statement($update_query);

尝试这种方式。它会帮助您进行批量更新。

最终产量将

更新pro_orders_has_passengers SET title_name =标题名称为CASE =“ MR”。然后在title_name ='MRS'时'mr'。 THEN'mrs'当title_name ='小姐'THEN'ms'当title_name ='女孩'THEN'girl'当title_name ='男孩'THEN'男孩'结束title_name IN （“ MR。”，“ MRS。”，“小姐”，“女孩”，“男孩”）

Answer 3

尝试这个。有关更多信息，请参见以下链接

1。I want to use CASE statement to update some records in sql server 2005

2。运行一般性声明：https://laravel.com/docs/5.7/database

DB::statement(
      UPDATE pro_orders_has_passengers
      SET title_name = CASE  
                    WHEN title_name = 'Mr.' THEN 'mr' 
                    WHEN title_name = 'Mrs.' THEN 'mrs' 
                    //-------Others cases-----//
                    ELSE LASTNAME
                END 
      WHERE title_name IN ('Mr.', 'Mrs.', .....)
);

Laravel DB ::表更新提交

3 个答案: