Question

我想执行多个更新语句而不是单独执行它们以避免多次DB命中。以下是代码

$updateStatement = '';
    foreach ($users as $user) {
        $i++;
        $updateStatement = $updateStatement. "update users set packet_seqno = '".$i."' where id = ".$user->id . ';  ';      
    }
    \DB::statement($updateStatement);

然而，它不起作用并抛出错误

SQLSTATE [42000]：语法错误或访问冲突：1064 SQL语法中有错误;检查与MySQL服务器版本对应的手册，以便在'update
附近使用正确的语法

你能帮我解决这个问题吗？

这是$ updateStatement的转储。

"update ppt_import_mortgage1 set packet_seqno = '1' where id = 37;  update ppt_import_mortgage1 set packet_seqno = '2' where id = 39;  update ppt_import_mortgage1 set packet_seqno = '3' where id = 40;  update ppt_import_mortgage1 set packet_seqno = '4' where id = 42;  update ppt_import_mortgage1 set packet_seqno = '5' where id = 43;  update ppt_import_mortgage1 set packet_seqno = '6' where id = 44;  update ppt_import_mortgage1 set packet_seqno = '7' where id = 45;  update ppt_import_mortgage1 set packet_seqno = '8' where id = 46;  update ppt_import_mortgage1 set packet_seqno = '9' where id = 47;  update ppt_import_mortgage1 set packet_seqno = '10' where id = 48;  "

Answer 1

如果你想使用雄辩，你可以这样做：

foreach ($users as $user) {
       $i++;
    User::where('id',$user->id)->update(['packet_seqno' => $i]);
}

或更好：

foreach ($users as $user) {
       $i++;
    $user->update(['packet_seqno' => $i]);
}

Answer 2

试试这个：

$updateStatement = '';
   foreach ($users as $user) {
       $i++;
       $updateStatement = "update users set packet_seqno = '".$i."' where id = ".$user->id; 
    \DB::update(\DB::raw($updateStatement));     
}

看，如果有帮助。

Laravel 5.0批量更新

2 个答案: