如何使用 Laravel 5.1执行原始查询？

因此，我有这个小查询运行在我的数据库，它在 MySQL 工作台工作良好。基本上，选择与左连接和联合与左连接再次。

SELECT
cards.id_card,
cards.hash_card,
cards.`table`,
users.name,
0 as total,
cards.card_status,
cards.created_at
FROM cards
LEFT JOIN users
ON users.id_user = cards.id_user
WHERE hash_card NOT IN ( SELECT orders.hash_card FROM orders )
UNION
SELECT
cards.id_card,
orders.hash_card,
cards.`table`,
users.name,
sum(orders.quantity*orders.product_price) as total,
cards.card_status,
max(orders.created_at)
FROM menu.orders
LEFT JOIN cards
ON cards.hash_card = orders.hash_card
LEFT JOIN users
ON users.id_user = cards.id_user
GROUP BY hash_card
ORDER BY id_card ASC

试图把它翻译成 Laravel，但没有成功。

$cards = Card::selectRaw('cards.id_card, cards.hash_card ,cards.table, users.name, 0 as total, cards.card_status, cards.created_at as last_update')
->leftJoin('users','users.id_user','=','cards.id_user')
->whereNotIn( 'hash_card', Order::select('orders.hash_card')->get() )
->union(
Order::selectRaw('cards.id_card, orders.hash_card, cards.table, users.name, sum(orders.quantity*orders.product_price) as total, cards.card_status, max(orders.created_at) as last_update')
->leftJoin('cards','cards.hash_card','=','orders.hash_card')
->leftJoin('users','users.id_user','=','cards.id_user')
)
->groupBy('hash_card')
->orderBy('cards.id_card','asc')
->get();

我听错了

Builder.php 行1249中的 ErrorException: 未定义属性: Illumination Database 雄辩的生成器: : $bindings

如何在 Laravel 中执行一个完全原始的查询，或者在 Laravel 中以正确的方式编写查询？

300935

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最佳答案

I found the solution in this topic and I code this:

$cards = DB::select("SELECT
cards.id_card,
cards.hash_card,
cards.`table`,
users.name,
0 as total,
cards.card_status,
cards.created_at as last_update
FROM cards
LEFT JOIN users
ON users.id_user = cards.id_user
WHERE hash_card NOT IN ( SELECT orders.hash_card FROM orders )
UNION
SELECT
cards.id_card,
orders.hash_card,
cards.`table`,
users.name,
sum(orders.quantity*orders.product_price) as total,
cards.card_status,
max(orders.created_at) last_update
FROM menu.orders
LEFT JOIN cards
ON cards.hash_card = orders.hash_card
LEFT JOIN users
ON users.id_user = cards.id_user
GROUP BY hash_card
ORDER BY id_card ASC");

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you can run raw query like this way too.

DB::table('setting_colleges')->first();

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    DB::statement("your query")

I used it for add index to column in migration

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Example from Laravel documentation:

$users = DB::table('users')
->selectRaw('count(*) as user_count, status')
->where('status', '<>', 1)
->groupBy('status')
->get();

Another example:

$products = DB::table('products')
->leftjoin('category','category.product_id','=','products.id')
->selectRaw('COUNT(*) as nbr', 'products.*')
->groupBy('products.id')
->get();

Another example – we can even perform avg() and count() in the same statement.

$salaries = DB::table('salaries')
->selectRaw('companies.name as company_name, avg(salary) as avg_salary, count(*) as people_count')
->join('companies', 'salaries.company_id', '=', 'companies.id')
->groupBy('companies.id')
->orderByDesc('avg_salary')
->get();

Credits: https://blog.quickadminpanel.com/5-ways-to-use-raw-database-queries-in-laravel/