Illuminate\Database\Query\Builder::whereInExistingQuery PHP Method

Add an external sub-select to the query.

protected whereInExistingQuery ( string $column, Builder \| static $query, string $boolean, boolean $not )
$column	string
$query	Builder \| static
$boolean	string
$not	boolean

    protected function whereInExistingQuery($column, $query, $boolean, $not)
    {
        $type = $not ? 'NotInSub' : 'InSub';
        $this->wheres[] = compact('type', 'column', 'query', 'boolean');
        $this->addBinding($query->getBindings(), 'where');
        return $this;
    }

Illuminate\Database\Query\Builder::whereInExistingQuery PHP Method

whereInExistingQuery() protected method