Convert Mysql Query to Laravel Eloquent

问题

I am using Laravel 5.1 in my application.

My MySQL Query is

SELECT * FROM (SELECT uu.*,t.left_id AS meb_id,(CAST(t.pair AS UNSIGNED) - IFNULL(p.pair,0)) AS pair FROM (SELECT left_id,
(CASE 
WHEN ((SELECT COUNT(meb_id) FROM user_count WHERE left_id=u.left_id AND active = 1 AND join_date <= '1442255400000') >= (SELECT COUNT(meb_id) FROM user_count WHERE right_id=u.left_id AND active = 1 AND join_date <= '1442255400000')*2) 
THEN (SELECT COUNT(meb_id) FROM user_count WHERE right_id=u.left_id AND active = 1 AND join_date <= '1442255400000')
WHEN ((SELECT COUNT(meb_id) FROM user_count WHERE left_id=u.left_id AND active = 1 AND join_date <= '1442255400000') < (SELECT COUNT(meb_id) FROM user_count WHERE right_id=u.left_id AND active = 1 AND join_date <= '1442255400000')*2) 
THEN ((SELECT COUNT(meb_id) FROM user_count WHERE right_id=u.left_id AND active = 1 AND join_date <= '1442255400000') /2)
WHEN ((SELECT COUNT(meb_id) FROM user_count WHERE right_id=u.left_id AND active = 1 AND join_date <= '1442255400000') >= (SELECT COUNT(meb_id) FROM user_count WHERE left_id=u.left_id AND active = 1 AND join_date <= '1442255400000')*2)
THEN (SELECT COUNT(meb_id) FROM user_count WHERE left_id=u.left_id AND active = 1 AND join_date <= '1442255400000')
WHEN ((SELECT COUNT(meb_id) FROM user_count WHERE right_id=u.left_id AND active = 1 AND join_date <= '1442255400000') < (SELECT COUNT(meb_id) FROM user_count WHERE left_id=u.left_id AND active = 1 AND join_date <= '1442255400000')*2)
THEN ((SELECT COUNT(meb_id) FROM user_count WHERE left_id=u.left_id AND active = 1 AND join_date <= '1442255400000') / 2) END
) AS pair
FROM user_count AS u WHERE  left_id <> 0 GROUP BY left_id) AS t
LEFT JOIN users AS uu ON uu.`id` = t.left_id
LEFT JOIN `total_payment` p ON t.left_id = p.`meb_id`
WHERE t.pair <> 0) AS f WHERE f.pair > 0  AND f.active = 1

How Can I convert it in Laravel Eloquent? I don't know how to use when case in laravel eloquent.

My Database schema is like this

user_count table

user table

total_payment table

Can anyone help me please?

回答1:

Just surround your raw query with a DB::statement(""), like this :

DB::statement("INSERT INTO `mydatabase`.`mytable` (`id`, `created_at`, `updated_at`, `deleted_at`) VALUES ('7', '2015-09-26 13:38:48', '2015-09-26 13:43:41', NULL)");

It will do the job fine and works with seeds as well.

回答2:

Eloquent is an ORM (Object-relational mapping), it means you can map your database to PHP objects (Eloquent use the Active Record pattern).

It is not a DBAL however you can still execute SQL queries through the DB Facade.

The example provided by you, the user table can be an Eloquent object.

class User extends Model{
   /**
   * The table associated with the model.
   *
   * @var string
   */
  protected $table = 'user';
}

Since now you can fetch all user rows like:

$userCollection = (new User)->all(); //Fetch all rows

Or you can find one by PK like:

$user = (new User)->find(123); //123 is the PK of the User

来源：https://stackoverflow.com/questions/32738504/convert-mysql-query-to-laravel-eloquent

标签

mysql

laravel-5.1