How to Build Complex OR and AND Queries with Laravel\'s Eloquent?

Complex Queries in Laravel: OR and AND with Eloquent Query Builder

When crafting intricate queries in Laravel, there may be instances where you require combining multiple conditions with OR and AND operators. How can this be achieved using the Eloquent query builder?

OR..AND Queries with Logical Grouping

For queries involving OR conditions followed by AND conditions, Laravel 7.x/4.2 offers a convenient solution: logical grouping. Consider the following query:

WHERE (a = 1 OR b =1 ) AND (c = 1 OR d = 1)

Using logical grouping, this query can be translated to the following:

Model::where(function ($query) {
    $query->where('a', '=', 1)
          ->orWhere('b', '=', 1);
})
->where(function ($query) {
    $query->where('c', '=', 1)
          ->orWhere('d', '=', 1);
});

This approach allows you to define multiple nested OR conditions.

Complex Queries: Raw SQL

While the logical grouping technique is ideal for simpler OR..AND queries, more complex scenarios may necessitate the use of raw SQL. Here's an example:

Model::whereRaw(
    '(a = 1 OR b = 1) AND (c = 1 OR d = 1)'
);

In Summary:

Eloquent's logical grouping feature provides an elegant solution for OR..AND queries. However, for more complex scenarios, raw SQL may offer increased flexibility and control. Consider the appropriate approach based on the complexity of your query.

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