Laravel eloquent model query for `not null`
Stefan Bogdanescu
Founder & Senior Architect · 2026-06-29
# Laravel Eloquent: The Best Way to Query for `NOT NULL` Values
I've been using Laravel for a project and using the Eloquent models to grab the model instances I need. While Eloquent excels at retrieving data based on specific values, one common query pattern developers run into is how to filter records where a column is explicitly *not null*. It seems intuitive, but finding the exact syntax can sometimes be tricky when moving between plain SQL and Eloquent's expressive methods.
This post will walk you through the most idiomatic and efficient ways to perform `NOT NULL` checks in Laravel Eloquent, ensuring your database queries are clean, readable, and performant.
## Understanding Null vs. Not Null in Databases
Before diving into the code, it’s crucial to understand the underlying concept. In SQL, a column is defined as `NOT NULL` if it must contain a value, and `NULL` means the absence of a value.
When you want to retrieve records where a column *has* a value, you are essentially asking the database to filter out the rows where that column is explicitly set to `NULL`. This translates directly into using the SQL operator `IS NOT NULL`.
The example you provided, `$flight = App\Flight::where('ticket_id', '!=', null);`, works perfectly fine in many scenarios. However, Laravel provides specialized methods within Eloquent that are often cleaner and more expressive for these common checks.
## Eloquent Methods for Filtering Non-Null Data
Laravel’s Eloquent builder provides dedicated methods that map directly to these database operations, making your intent immediately clear to other developers reading your code. There are two primary, recommended ways to achieve this: the fluent method and the raw query method.
### Method 1: Using `whereNotNull()` (The Eloquent Way)
The most elegant solution in Laravel is using the `whereNotNull()` method. This method abstracts away the necessary SQL structure (`IS NOT NULL`) for you, making your intent crystal clear.
If you have a relationship where a foreign key *must* exist (e.g., every flight must have a ticket), this method is perfect:
```php
use App\Models\Flight;
// Retrieve all Flight models where the ticket_id column has a value
$flightsWithTickets = Flight::whereNotNull('ticket_id')->get();
// Or, when chaining other constraints:
$flightsWithActiveTickets = Flight::whereNotNull('ticket_id')
->where('status', 'active')
->get();
```
This approach keeps your code highly readable and leverages Eloquent’s power. This aligns perfectly with the principles of building robust applications, much like when structuring data interactions within the Laravel ecosystem.
### Method 2: Using Standard `where()` with `IS NOT NULL` (The Raw SQL Way)
If you prefer to write direct SQL logic or need more complex conditional expressions, you can always fall back on the standard `where()` clause combined with raw SQL syntax:
```php
// Retrieve all Flight models using a standard where clause for SQL
$flightsWithTicketsRaw = Flight::where('ticket_id', 'IS NOT NULL')->get();
```
While this works, it is generally less idiomatic than using the dedicated Eloquent helpers. It's important to remember that when dealing with complex database interactions, understanding how Eloquent maps these methods to SQL is key to effective debugging and optimization.
## Best Practices and Performance Considerations
When querying for `NOT NULL` conditions, performance is often dictated by database indexing. Ensure that any column you frequently filter on—especially foreign keys used for relationships like `ticket_id`—is properly indexed in your database schema.
For large datasets, using the proper Eloquent methods ensures that Laravel generates efficient SQL queries. As you scale your application and manage complex data structures, focusing on these clean query patterns will make maintenance significantly easier. For more deep dives into structuring your backend logic, always refer to the comprehensive documentation provided by the Laravel team at [laravelcompany.com](https://laravelcompany.com).
## Conclusion
To summarize, while you can achieve the goal using direct comparisons like `where('column', '!=', null)`, the most recommended and readable approach in Laravel is to use the dedicated `whereNotNull('column')` method. This provides a semantic layer over the SQL operation, leading to cleaner, more maintainable, and highly expressive code. By adopting these Eloquent best practices, you ensure your data retrieval logic is as robust as the application itself.