Laravel

Laravel Query Builder

Laravel Query Builder
  1. What is Query Builder in laravel?
  2. How does laravel query builder work?
  3. How do I join a query in laravel?
  4. How do I select a database in laravel?
  5. Which is better eloquent or query builder?
  6. Which is better Django or laravel?
  7. Is null laravel query?
  8. What is laravel eloquent builder?
  9. What is pluck laravel?
  10. What is join in laravel?
  11. How can I join more than two tables in laravel?
  12. What is left join?

What is Query Builder in laravel?

Laravel Query Builder is a package by Alex Vanderbist and the folks at Spatie, to quickly build Eloquent queries from API requests. This package makes creating complex API queries with Laravel incredibly simple.

How does laravel query builder work?

In Laravel the database query builder provides an easy interface to create and run database queries. It can be used to perform all the database operations in your application, from basic DB Connection, CRUD, Aggregates etc and it works on all supported database systems like a champ.

How do I join a query in laravel?

Understanding Join Queries in Laravel By Example

  1. First, we target the user based on the user id, just like in the first query of the original code block.
  2. Next, we join our result with the role table, grabbing the role which is equal to this user's role. ...
  3. Finally, we decide what to retrieve.

How do I select a database in laravel?

Once you have configured your database connection, you may run queries using the DB facade.

  1. Running A Select Query. $results = DB::select('select * from users where id = ? ...
  2. Running An Insert Statement. ...
  3. Running An Update Statement. ...
  4. Running A Delete Statement. ...
  5. Running A General Statement.

Which is better eloquent or query builder?

So when we use Eloquent and When DB facades:

When we'll work on a simple and small records site with simple CRUD and there records are not fact, then use Eloquent there. When we'll work on a lot's of records, it is better to use DB Query than Eloquent.

Which is better Django or laravel?

Django is a little bit faster as it uses the programming language Python, which is faster, whereas Laravel uses PHP, which is a little bit slower. Django has a lot of built-in tools like decorators, SEO tools, third-party libraries etc., whereas Laravel has simpler features and contains method injection.

Is null laravel query?

Check if null: whereNull

Laravel Eloquent provides a handy method called whereNull , which you could use to verify if a specific value of a given column is NULL.

What is laravel eloquent builder?

Laravel eloquent provides a simple way of making database queries in your application. It uses Models as an object to interact with a table. To fetch all records from a table you can simple use. Post::get(); There are helpful methods to fetch data based on conditions.

What is pluck laravel?

Laravel Pluck method is part of the Laravel Collections. The pluck helper method is used to retrieve a list of specific values from a given $array. It is most useful when used against arrays of objects, but will also work with arrays just as well.

What is join in laravel?

Laravel Inner Join clause selects records if the given column values matching in both tables. When joining two tables in Laravel, you should be specific about what you are choosing. ... Both have ID columns, and there is a user_id in the post, which is a foreign key for the users' table.

How can I join more than two tables in laravel?

“laravel join multiple tables” Code Answer

  1. $users = DB::table('users')
  2. ->join('contacts', 'users.id', '=', 'contacts.user_id')
  3. ->join('orders', 'users.id', '=', 'orders.user_id')
  4. ->select('users.*', 'contacts.phone', 'orders.price')
  5. ->get();

What is left join?

The LEFT JOIN command returns all rows from the left table, and the matching rows from the right table. The result is NULL from the right side, if there is no match.

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