Question

我有一个查询：

public function upShops() {
DB:statement('update shops set position = 
(SELECT FIND_IN_SET( CONCAT(points, '_', created_at), 
(SELECT GROUP_CONCAT( CONCAT(points, '_', created_at) ORDER BY points desc, created_at desc ) FROM (select * from shops) as shop_rankings)))');
}

该查询如何转换为雄辩的Laravel？我认为有必要这样做：

Shop::update(['position' => '(SELECT FIND_IN_SET( CONCAT(points, '_', 
created_at), (SELECT GROUP_CONCAT( CONCAT(points, '_', created_at)'])-
>orderByDesc('points')->orderByDesc('created_at');

但这不起作用。更新方法出现错误。我怎样才能雄辩正确地做？

Answer 1

更新雄辩的方法返回一个布尔值，否则返回true，否则返回true并返回错误，因此您无法将诸如orderByDesc之类的方法链接到它。如何更新的示例如下：

Shop::update(['position' => 'value']);

Answer 2

如何处理（为了更清楚起见，我在子查询的选择中添加了表别名）？

\DB::table("shops")
    ->update([
        "position" => \DB::raw("(SELECT FIND_IN_SET( CONCAT(shops.points, '_', shops.created_at), 
    (SELECT GROUP_CONCAT( CONCAT(shop_rankings.points, '_', shop_rankings.created_at) ORDER BY points desc, created_at desc ) FROM (select * from shops) as shop_rankings)))")
]);

将查询翻译成Laravel雄辩的

2 个答案: