How to Resolve `sql_mode=only_full_group_by` Conflicts in Laravel Eloquent Queries?

Troubleshooting Incompatible with sql_mode=only_full_group_by in Laravel Eloquent

When executing Laravel Eloquent queries, it's possible to encounter an error related to sql_mode=only_full_group_by. This error occurs when a query contains non-aggregated columns in the GROUP BY clause.

Cause:

The error is caused by a strict MySQL mode that requires all columns in the SELECT list to be either grouped or aggregated in the GROUP BY clause. In the provided Eloquent query, the id column is included in the SELECT list but is not included in the GROUP BY clause.

Solution:

The preferred solution is to disable the strict MySQL mode in the database connection settings. This can be done by adding the following to your config/database.php file:

'mysql' => [
    'strict' => false,
],

Alternative Solution:

If disabling the strict mode is not an option, you can modify the query to ensure that all columns in the SELECT list are either grouped or aggregated. In the case of the example query, this can be achieved by adding Product::raw('COUNT(*) as product_count') to the SELECT clause and grouping by both store_id and id:

$products = Product::where('status', 1)
    ->where('stock', '>', 0)
    ->where('category_id', '=', $category_id)
    ->groupBy(['store_id', Product::raw('id')])
    ->orderBy('updated_at', 'desc')
    ->take(4)
    ->get();

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