How to Make Laravel Eloquent "IN" Query?
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Efficient Laravel Eloquent "IN" Queries: A Comprehensive Guide for Developers
Body:
Laravel is a fantastic PHP framework that simplifies the process of writing efficient and scalable web applications. One of its most powerful features is Laravel's Eloquent ORM, which makes working with relational databases incredibly easy and intuitive. When it comes to performing complex queries, Eloquent provides several methods to make your life simpler.
In this article, we will focus on how to make "IN" queries in Laravel Eloquent. An IN query is a type of SQL statement that helps you retrieve data where one or more column values are within a list of specified values. This can greatly ease the burden of writing long and complex if-else conditions in your application, especially when dealing with a large number of records.
Let's dive into how to make Laravel Eloquent "IN" queries:
1. The Traditional Way - Using Raw SQL Queries
In this approach, you'll be using the DB facade provided by Laravel to run your query directly against the database. This can come in handy when working with complex or custom queries that are not supported by Eloquent's built-in methods. Here's an example:
```php
use Illuminate\Support\Facades\DB;
$result = DB::select("SELECT * FROM exampleTbl WHERE id IN (1, 2, 3, 4)");
foreach ($result as $row) {
// Process results
}
```
In this code snippet, we use the DB facade to execute a raw SQL query with an "IN" clause. Note that you'll need to ensure your database connection is properly defined and configured before executing the query.
2. Using Laravel Eloquent Collection Methods
If you have a collection of IDs, you can easily perform an "IN" query using Laravel's Eloquent model methods:
```php
$ids = [1, 2, 3, 4];
$result = ExampleModel::whereIn('id', $ids)->get();
foreach ($result as $row) {
// Process results
}
```
This approach is straightforward and efficient, as it leverages Eloquent's relationship with your database. It's worth mentioning that you should always avoid querying multiple tables in a single "IN" clause unless absolutely necessary due to performance issues. If possible, consider breaking down your query into several smaller queries or using join clauses instead.
3. Query Builder Methods for Performing "IN" Queries
Laravel also provides the ability to use the Query Builder (Eloquent's underlying database abstraction layer) to perform "IN" queries. In this case, you can use the whereIn() method for checking multiple conditions:
```php
use Illuminate\Database\Query\Builder;
$result = DB::table('exampleTbl')
->whereIn('id', [1, 2, 3, 4])
->get();
foreach ($result as $row) {
// Process results
}
```
Note that the Query Builder method requires you to specify the table name explicitly. This is because it doesn't have knowledge of your model relationships. As such, you should be cautious when using this approach.
4. Best Practices and Performance Tips for "IN" Queries
When writing "IN" queries in Laravel Eloquent, consider the following best practices:
- Avoid performing multiple joins in a single query, as it could impact performance dramatically.
- Use indexes on the database tables involved to improve speed.
- Perform caching when possible by using Laravel's cache methods or installing third-party caching solutions like Redis.
- Always test and benchmark your queries before deploying them in production.
Conclusion:
Writing efficient Laravel Eloquent "IN" queries can be a challenging task, but with the right tools and techniques, it is indeed possible. Remember to always choose the most appropriate method based on your specific use case and the complexity of your query. By following best practices and keeping your database performance in mind, you'll be well on your way to developing powerful and scalable web applications using Laravel Eloquent.