[英]Binding parameter to Db::raw laravel query
I've got the following raw query: 我有以下原始查询:
$results = Db::select( Db::raw("SELECT HOUR(created_at) as hour, COUNT(*) as count
FROM `visited`
WHERE created_at >= DATE_SUB(NOW(),INTERVAL 16 DAY)
GROUP BY HOUR(created_at)") );
I need to parameterize the day interval, so I tried this: 我需要参数化日间隔,所以我尝试了这个:
$days = 16;
$results = Db::select( Db::raw("SELECT HOUR(created_at) as hour, COUNT(*) as count
FROM `visited`
WHERE created_at >= DATE_SUB(NOW(),INTERVAL :days DAY)
GROUP BY HOUR(created_at)", ["days" => $days]) );
But I am getting the following error: 但是我收到以下错误:
"SQLSTATE[HY000]: General error: 2031
“SQLSTATE [HY000]:一般错误:2031
Apparently the binding is not working. 显然绑定不起作用。 What am I doing wrong?
我究竟做错了什么?
Try this: 试试这个:
$results = DB::select('SELECT HOUR(created_at) as hour, COUNT(*) as count FROM visited WHERE created_at >= DATE_SUB(NOW(),INTERVAL ? DAY) GROUP BY HOUR(created_at)', [16]);
You can even use named bindings: 您甚至可以使用命名绑定:
$results = DB::select('SELECT HOUR(created_at) as hour, COUNT(*) as count FROM visited WHERE created_at >= DATE_SUB(NOW(),INTERVAL :days DAY) GROUP BY HOUR(created_at)', ['days' => 16]);
Don't need to use DB::raw()
, just use DB::select()
for simple raw select queries: https://laravel.com/docs/master/database#running-queries 不需要使用
DB::raw()
,只需使用DB::select()
进行简单的原始选择查询: https : //laravel.com/docs/master/database#running-queries
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