How I can get all id's of taxonomy term_id Wordpress

Question

How can i fetch products by terms? in taxonomy pa_color i have a lot of colors inside and i can't write all names in array how i can fetch all products with all terms id?

'tax_query'      => array( array(
        'taxonomy'        => 'pa_color',
        'field'           => 'slug',
        'terms'           =>  all,
        'operator'        => 'IN',
    ) )
) );

Answer 1

Try this:

'tax_query'      => array( array(
        'taxonomy'        => 'pa_color',
        'field'           => 'slug',
        'operator'        => 'EXISTS',
    ) )
) );