laravel query data descending order

Laravel is a popular open source PHP framework that is widely used to develop web applications. If you are developing an application using Laravel and need to query data in descending order, then this article is for you.

In Laravel, you can use Eloquent ORM or Query Builder to query data in the database. Both methods provide an easy way to sort the query in descending order.

Use Eloquent ORM to query data in descending order

Eloquent ORM is an object-relational mapping (ORM) technology in Laravel, which can help you map data in the database to PHP objects, thereby Easier to operate on data.

If you want to use Eloquent ORM to query data in descending order, you can call the orderByDesc() method after the query method. This method will sort the result set in descending order according to the specified column.

Suppose you have a database table named "users", which contains the user's ID, name and registration time. The following is an example of using Eloquent ORM to query data in descending order:

$users = AppUser::orderByDesc('created_at')->get();

This query will sort the "users" table in descending order according to the "created_at" column and return the result set.

It should be noted that the orderByDesc() method only applies to Eloquent ORM queries. If you use Query Builder to query data, you need to use the orderBy() method and pass the "desc" parameter.

Use Query Builder to query data in descending order

Query Builder is another query method in Laravel that can directly query the database without using ORM.

If you want to use Query Builder to query data in descending order, you can call the orderBy() method after the query method, and pass the column name you want to sort in descending order and the "desc" keyword in the parameters.

The following is an example of a Query Builder descending sort query:

$users = DB::table('users')
            ->orderBy('created_at', 'desc')
            ->get();

This query will sort the "users" table in descending order according to the "created_at" column and return the result set.

Using the orderBy() method, you can also perform ascending query, just change the "desc" parameter to "asc". By default, the orderBy() method queries in ascending order.

Conclusion

Whether you are using Eloquent ORM or Query Builder to query data, Laravel provides an easy way to sort in descending order. By learning the methods provided in this article, you can easily sort the data in your database to better meet the requirements of your application.

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