How to use 'where not in' in laravel?

by mallory_cormier , in category: PHP General , 5 months ago

How to use 'where not in' in laravel?

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1 answer

by cortez.connelly , 5 months ago

@mallory_cormier 

In Laravel, the WHERE NOT IN clause can be used to exclude specific values from a query. This clause is commonly used with the whereIn() method in Laravel's query builder.


Here is an example of how to use whereNotIn() in Laravel:

  1. Start by importing the necessary namespace at the top of your PHP file:
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use IlluminateSupportFacadesDB;


  1. Construct a query using the whereNotIn() method:
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$result = DB::table('your_table')
            ->whereNotIn('column_name', [value1, value2, ...])
            ->get();


Replace 'your_table' with the name of your database table and 'column_name' with the actual column name you want to exclude values from. [value1, value2, ...] should be an array of the specific values you want to exclude from the query.

  1. Optionally, you can also chain other query builder methods like select(), orderBy(), and limit() to further customize your query.
  2. Finally, you can retrieve the results using get() or first() method.


Here's an example showcasing a complete query:

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$result = DB::table('posts')
            ->whereNotIn('status', ['draft', 'pending'])
            ->orderBy('created_at', 'desc')
            ->get();


In this example, the query will exclude any rows where the 'status' column is equal to 'draft' or 'pending', and the results will be ordered in descending order of the 'created_at' column.


Note: Don't forget to replace 'your_table', 'column_name', [value1, value2, ...], and any other placeholders with the actual values in your application.