laravel跨庫查詢方法

laravel中跨庫查詢技巧：

1. 跨庫查詢

# 聲明庫名和表名即可
$broker = \DB::connection('database2')->table('broker')
            ->where(['state'=>1, 'id'=>15])->first();

2. 跨庫連表查詢

# 跨數據庫連接表查詢數據比較麻煩，在拼接SQL時，連接庫相關必須使用\DB::raw()來聲明定義，否則框架會自動在前面添加主庫表前綴test_
$data = TestModel::from('test_book as logbook')
            ->select(['logbook.id', \DB::raw('o.orderNo'), 'logbook.money', 'logbook.capitalType as payTypeName', \DB::raw('o.actualPay as totalPrice'), \DB::raw('o.payTime')])
            ->leftJoin(\DB::raw('`database2`.`order` as o'), \DB::raw('o.id'), 'logbook.orderId')
            ->where(['logbook.entityType'=>'broker', 'logbook.entityId'=>15, 'logbook.io'=>1])
            ->paginate(1);